The composition and structure of carbon-based molecules are closely related to the way they interact with the bloodstream. Carbon atoms are a key component of the molecules that make up the human body, and their unique properties allow them to interact with other molecules in the bloodstream in a variety of ways.
Carbon atoms form the backbone of most organic molecules, including proteins, carbohydrates, and lipids. The carbon atom has four valence electrons, which allows it to form four chemical bonds with other atoms. This ability to form multiple covalent bonds makes it possible for carbon-based molecules to form large, complex structures such as proteins and carbohydrates. These molecules can then interact with other molecules in the bloodstream, such as hormones, enzymes, and ions.
The structure of carbon-based molecules also affects how they interact with the bloodstream. Molecules with a higher degree of branching are more likely to interact with the proteins and other molecules in the bloodstream. For example, lipids with long, branched hydrocarbon chains are more likely to bind to proteins than lipids with shorter, unbranched chains. This increased interaction can have a profound effect on the function of the proteins and other molecules in the bloodstream.
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marathon runners are long-distance runners (marathons are races that are 26.2 miles long). studies have shown that the muscles of marathon runners contain an abundance of slow-twitch muscle cells. which statement about these fibers is true?
The muscles of marathon runners contain an abundance of slow-twitch muscle cells. It is true that There are a lot of mitochondria in slow-twitch fibers that can make ATP aerobically.
Muscle fibers with a slow twitch are resistant to fatigue and focused on small, sustained movements and posture control. They are aerobic in nature and have more mitochondria and myoglobin than fast-twitch fibers. Due to their blood supply, slow-twitch fibers are also sometimes referred to as type I or red fibers.
Fibers that produce ATP through aerobic respiration (oxygen and glucose) contract relatively slowly and are referred to as slow oxidative (also known as slow twitch or Type I). Fast oxidative fibers, also known as Type IIa or fast-twitch, contract relatively quickly and primarily produce ATP through aerobic respiration.
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the smog that frequently exists in major metropolitan areas such as los angeles, california, is known as brown smog/phtochemical smog and consists primarily of what component?
Brown smog, often referred to as photochemical smog, is usually present in large cities like Los Angeles, California, and is mostly made up of ozone.
What is ozone?Three oxygen atoms are bound together to form the colorless gas known as ozone. It naturally occurs at a high altitude in the Earth's atmosphere, shielding the surface from dangerous ultraviolet (UV) rays until it is destroyed by natural or man-made events. When it is present closer to the ground, it is also regarded as pollutant with negative effects on people and other animals.
The type of oxygen we typically breathe, molecular oxygen (O2), is found in the whole atmosphere. According to NASA, it can be broken down into two single oxygen atoms by the sun's rays, and one of these can recombine with an O2 molecule to create O3, or ozone.
When lightning splits oxygen molecules apart after a thunderstorm, the gas, which sometimes smells like chlorine, is released into the air. According to a piece written by the NASA Goddard Space Flight Center, this characteristic is what gives ozone its name, which comes from the Greek word ozein, which means "to smell."
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how do the three layers of connective tissue surrouding the belly of a muscle work with tendons to create movement
A tendon is made up mostly of collagenous fibres and is a thick, fibrous connective tissue. The fundamental components of a tendon are primary collagen fibres, which are made up of clusters of collagen fibrils.
Primary fibres are gathered into primary fibre bundles (subfasicles), and collections of these bundles make secondary fibre bundles (fasicles). Tertiary fibre bundles are formed by a number of secondary fibre bundles, and these bundles in turn form the tendon unit. The endotenon, a connective tissue sheath that surrounds the primary, secondary, and tertiary bundles, makes it easier for the bundles to glide against one another when the tendon moves. The thin layer of connective tissue that sheathes the tendon unit, the epitenon, is next to the endotenon.
Lying outside the epitenon and contiguous with it is a loose elastic connective tissue layer known as paratenon, which allows the tendon to move against neighbouring tissues. The tendon is attached to the bone by collagenous fibres (Sharpey fibres) that continue into the matrix of the bone.
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antarctic fur seals mate in the early summer. fertilization also occurs at this time, but the embryos do not implant until autumn. this is an example of group of answer choices fetal diapause. delayed fertility. delayed implantation. iteroparity. semelparity.
Antarctic fur seals mate in the early summer. Fertilization also occurs at this time, but the embryos do not implant until autumn. This is an example of (c) delayed implantation.
The condition known as delayed implantation occurs when an embryo reaches the blastocyst stage but then enters a state of metabolic quiescence, often lasting many months. This is helpful for animals that reproduce only sometimes. The blastocyst experiences quiescence as a result for around five months.
In order to time implantation to allow the offspring to optimise their growth before the start of the following winter season, the dormant blastocyst is freed by a procedure called as activation. Though isolated reports of follicular phase implantation have given rise to conjecture, there is little conclusive evidence that delayed implantation happens in humans.
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in order to prevent the restorative material from extruding beyond the gingival margin(s), you would like to place a matrix band. in which tooth would it be the most difficult to closely adapt this matrix band?
Anterior teeth have a variety of unique characteristics that make them more challenging to accurately place a matrix band.
The placement of a matrix band in order to prevent restorative material from extruding beyond the gingival margin(s) is a common dental procedure. In general, the most difficult tooth in which to closely adapt a matrix band is an anterior tooth, such as an incisor or canine
First, anterior teeth have a smaller surface area than posterior teeth, which can make it more difficult to correctly fit the matrix band. In addition, the anatomy of the anterior teeth, including their cuspal inclinations, grooves, and ridges, can impede the close adaptation of the matrix band. As such, it can be more difficult to properly form the matrix band to the contours of the tooth, as well as to ensure that the band is not too tight or too loose.
Second, it can be more difficult to precisely place the matrix band on an anterior tooth due to the presence of adjacent teeth. The contours of the adjacent teeth may make it difficult to correctly position the band, as well as to ensure that the matrix band is not impinging on the adjacent tooth. Moreover, the presence of other restorative materials, such as crowns or bridges, can further complicate the placement of a matrix band.
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since the only type of molecule that a gene can code for is a protein, how is it that a trait relating to the metabolism of carbohydrate can be influenced by genes?
The amino acid pattern for the protein that a gene encodes is determined by the Target dna of that gene. Codons are collections of three nucleotide bases that are used to interpret the DNA sequence in the protein-coding area of a gene.
Which protein the cell produces is determined by the genetic code. Amino acid strands make up proteins. The arrangement of amino acids within a protein is determined by the nucleotide sequence of DNA genes. This is how your DNA and your characteristics are directly related. The term "genetic code" relates to the instructions given by a gene to a cell on how to produce a certain protein. In eukaryotes, the nucleus, where sections of DNA (gene) are translated to create messenger RNAs, gives instructions to ribosomes for protein synthesis (mRNAs). The ribosome receives an mRNA and utilizes the data it contains to create a protein with a particular amino acid sequence. A protein's codons each designate a single amino acid.
(Since the only type of molecule that a gene can code for is a protein, how is it that a trait relating to the metabolism of carbohydrate can be influenced by genes?
a. enzyme proteins are broken down into carbohydrates
b. enzyme proteins influence carbohydrate metabolism
c. carbohydrates are protein molecules
d. carbohydrates react with proteins in the body)
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Sh'qira reads an article about a family of wildcats. One of them had a mutation for tooth sharpness. Which is true of this mutation?
Sh'qira reads an article on a wildcat family. One of them possessed a mutation that made their teeth sharp. Which of the following statements regarding the mutant wildcat is accurate?
The tail of a young crawfish is lengthy. While its father has a tiny tail, its mother has a long tail. Which of these claims best describes the baby's lengthy tail? The tail-length gene was passed on to the young crawfish mother and father in equal amounts. Its long tail is made up of those genes connected together. Sh'qira reads a piece of writing about a pack of wildcats. One of them possessed a mutation that made their teeth sharp. The following is accurate regarding the wildcat with the mutation.
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a person cuts their finger. how does the process of mitosis help to repair the wound?
The process of mitosis helps to repair a wound by allowing the body to produce new cells to replace damaged or lost cells.
Mitosis is the process of cell division that produces two identical daughter cells from a single parent cell. During mitosis, the DNA in the parent cell is replicated, and the two copies are separated into the two daughter cells. This ensures that each daughter cell receives a complete copy of the genetic information necessary for the proper functioning of the organism. In the case of a wound, the body activates mitosis in the surrounding cells to produce new cells to replace the lost or damaged cells. This process helps to repair the wound and restore the integrity of the tissue. In summary, the process of mitosis helps to repair a wound by allowing the body to produce new cells to replace damaged or lost cells.
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During winter, when temperatures are low and days are short, some plants are
dormant and do not have leaves. What must these plants rely on for energy?
A. Photosynthesis in the stems
B. Nutrients from the soil
C. Stored sugars in tissues
D. Light from the Sun
Nutrients from the soil
when a mutation occurs in a gene involved with cell growth or division, resulting in the uncontrolled growth of cells, this condition is called .
When a mutation occurs in a gene involved with cell growth or division, resulting in the uncontrolled growth of cells, this condition is called cancer.
Cancer is one of the popular diseases in which some of the body cells grow uncontrollably and spread to other parts of the body.
When a gene mutation occurs, the nucleotides are in the wrong order which means the coded instructions are wrong and faulty proteins are made or control switches are changed. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. when the mutations are uncontrolled, the Tumors are caused by abnormal cells that multiply continuously. If the abnormal cells continue to divide unstopped, they can damage the tissues around them, spread to other parts of the body, and causes death.To know more About Cell growth or division of Cancer:
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FILL IN THE BLANK. movement of the shoulder laterally away from the body is called __________.
Abduction
Upward lateral movement of the humerus in the plane of the scapula, away from the body
Another example is
A movement of a body part away from the midline, either of the body as a whole or that of the hand or foot, is termed abduction
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Match the given characteristics to the corresponding prokaryotes.
spherical
rod-shaped
purple stain
pink stain
bacilli
arrowRight
gram-positive
arrowRight
gram-negative
arrowRight
cocci
spherical = cocci
rod-shaped = bacilli
purple stain = gram-positive
pink stain = gram-negative
Sexual reproduction increases genetic variation in a population. Which is a way that meiosis and fertilization lead to genetic variation?.
The recombination and independent assortment in meiosis lead to the genetic variation in sexual reproduction.
By combining different gene variations, meiosis and fertilization produce genetic variety (alleles). The raw materials for natural selection are sometimes provided by these new combinations, which may make an organism more or less fit (able to survive and reproduce).
Offspring through sexual reproduction could have a very diverse genetic makeup. This variety results from random gamete union during fertilization as well as independent assortment and crossing-over during meiosis. Sibling genetic diversity is a result of sexual reproduction as well. Only one chromosome from each homologous pair is randomly included when a parent creates a gamete. Therefore, compared to its siblings, a child may inherit a distinct set of chromosomes (and alleles).
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given that caffeine blocks the activity of camp phosphodiesterase, propose a mechanism by which caffeine ingestion leads to heightened alertness and sleeplessness. given that caffeine blocks the activity of phosphodiesterase, propose a mechanism by which caffeine ingestion leads to heightened alertness and sleeplessness. camp phosphodiesterase catalyzes the conversion of atp to camp . caffeine can prolong or enhance the effects of epinephrine by reversing the direction of the reaction performed by camp phosphodiesterase. camp phosphodiesterase breaks a phosphodiester bond in a camp molecule. caffeine can prolong or enhance the effects of epinephrine by inhibition of camp degradation by camp phosphodiesterase. caffeine blocks the activity of camp phosphodiesterase but initiates a signal transduction pathway that leads to heightened alertness and sleeplessness (effects similar to epinephrine action) by means of other messenger molecules. camp phosphodiesterase metabolizes camp into atp . caffeine can prolong or enhance the effects of epinephrine by inhibition of camp recycling by camp phosphodiesterase
A phosphodiester link in a cAMP molecule is broken by the enzyme cAMP phosphodiesterase. As cAMP phosphodiesterase is inhibited, caffeine can prolong or amplify the effects of epinephrine.
What occurs when phosphodiesterase is inhibited?Phosphodiesterase is unable to degrade cAMP and cGMP when it is inhibited. As a result, their concentrations inside the cell rise, which in turn causes calcium concentrations to drop.
What impact does a phosphodiesterase type 5 inhibitor have?The most often reported adverse medication responses include headache, flushing, stuffy nose, nasopharyngitis, and dyspepsia. PDE5 inhibitors have been associated with rare but serious reports of prolonged erections lasting more than 4 hours and priapism (painful erections lasting longer than 6 hours).
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An unexpected freeze that kills a population of chipmunks is an example of ______.
A) a density-dependent factor
B) a natal effect
C) an intrinsic factor
D) a density-independent factor
E) a population cycle
An unexpected freeze that kills a population of chipmunks is an example of a density-dependent factor.
A type I survivorship curve depicts people who have an elevated probability of surviving into their early and middle lives but a rapid decrease in the number of people who survive into their late lives. The proportion of people dying in Type II survivorship populations remains constant over time. At young ages, Type III survivorship populations have exceedingly high mortality rates.
Some of the more density-dependent biological (biotic) factors are predation, inter- but also intraspecific competition, waste accumulation, as well as parasitic diseases. In general, the higher this same mortality rate, the greater the population density. Density-dependent limiting factors influence a population's per rate of growth to change—typically, to fall—as population density increases. Population members due to limited food is one example.
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explain how amylase breaks down starch. Answer in lock and key theory
There are two types types of theory induced fit and lock and key theory.
Amylase breaks bonds between carbohydrate molecule.It can be found excreting from the pancreas and salivary glands.This enzyme follows lock and key model.The lock and key model means that the substrate must perfectly fit the enzyme, and the enzyme does not change.
The substrate , sucrose, consists of glucose and fructose bonded together.
The substrate binds to the enzyme forming an enzyme substrate complex.
The binding of the substrate and enzyme places stress on the glucose fructose bonds and the bond breaks.Products are released and the enzyme is free to bind other substrate.
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Amylase is a digestive enzyme that acts on starch in food, breaking it down into smaller carbohydrate molecules.
Enzymes are biopolymers that are involved in speeding up the reaction rates in various biological reactions. The lock and key theory suggests that there is a complimentary shaped substrate that will fit exactly into the specific shape of the enzyme's active site.
This theory is known as the 'lock and key model'. It explains why each enzyme will only work on one substrate. For example, the active site of amylase is only complementary to starch and will only break down starch, not protein or fat.
Amylase is the enzyme and the substrate is starch. The starch molecule will be complimentary in shape and fit into the active site of Amylase, so it can be broken down into maltose. Amylases digest starch into smaller molecules, ultimately it yields maltose, which is cleaved into two glucose molecules by maltase.
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in mammals, which two molecules serve as a reservoir of amino groups in the body? what are they converted to/from as they receive or donate -nh2
During exercise, muscles produce: 1. pyruvate from glycolysis
2 NH2 generated by typical protein breakdown
Pyruvate + NH2 = Alanine
The blood transports alanine to the liver.
Alanine is converted back to pyruvate by the liver.
Pyruvate: Alanine + NH2
Glucose is produced from pyruvate (gluconeogenesis)
Muscle receives glucose to be used as energy once more.
NH2 is converted by the liver to urea for excretion.
Organic substances known as amino acids have both amino and carboxylic acid functional groups. Alpha-amino acids, which make up proteins, are by far the most significant of the hundreds of amino acids found in nature. In the genetic code, only 22 alpha amino acids are present.
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the percentage of oxygen saturation of hemoglobin when the ph is 7.2 is lower than the percent of oxygen saturation of hemoglobin when the ph is 7.6. this can be explained best by .
The percentage of oxygen saturation of hemoglobin when the pH is 7.2 is lower than the percent of oxygen saturation of hemoglobin when the pH is 7.6. This can be explained best by oxygen affinity.
Hemoglobin is the red-colored pigment present in the blood that performs two functions. It provides red color to the blood and also helps in the transport of oxygen to the different parts of the body. A hemoglobin molecule can bind to 4 oxygen atoms at once.
Oxygen affinity is the ability of oxygen to bind to the hemoglobin molecule. More affinity means the oxygen can bind more tightly to the Hb molecule.
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Describe one reason that the framers chose to use the electoral college as the method to elect the president.
The founders of the Constitution decided to elect the president through the electoral college in part to protect against direct election by uneducated voters and to appease the elites.
The process used to elect the president of the United States is the Electoral College. United States-based company The Constitution intends for all 50 states to be able to vote in presidential elections. Two considerations led to the establishment of the Electoral College. The first goal was to put some distance between the electorate and the presidential election. The second was a component of the government's structure that allowed the smaller states more authority.
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which statement about the endoskeletons of vertebrates is true? group of answer choices the muscles are attached to a living support structure. endoskeletons are inert systems. molting is necessary in animals with endoskeletons. endoskeletons consist of chitin containing calcium. at least one skeletal structure is required to form a joint.
The statement that is true about the endoskeletons of vertebrates is that the muscles are attached to a living support structure. Endoskeletons are living systems that consist of a variety of materials, including calcium and chitin. Moreover, at least one skeletal structure is required to form a joint.
An endoskeleton is a type of internal skeletal structure that vertebrates possess. The endoskeleton is composed of bones, cartilage, or other hard materials that provide support and protection to the internal organs of the body. Endoskeletons are living systems, meaning they are constantly growing and changing as the body grows and changes.
The muscles of vertebrates are attached to the endoskeleton, which provides a stable structure to which the muscles can attach and exert force. This allows the body to move and perform physical tasks. Endoskeletons do not require molting, as they are not composed of living material like an exoskeleton. However, molting may occur in animals with an endoskeleton if the animal has a hard outer shell, such as a turtle or crab.
Endoskeletons consist of a variety of materials, including calcium, which is an important mineral for bone health. In addition, many endoskeletons contain chitin, a type of hard material found in shells, exoskeletons, and cell walls. This material is important for providing structure and protection to internal organs.
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in eukaryotic cells, a __________ by a __________ targets a growing peptide to the endoplasmic reticulum.
In eukaryotic cells, a Signal peptide by a biochemical pathway targets a growing peptide to the endoplasmic reticulum.
The endoplasmic reticulum (ER), which extends from the nuclear membrane throughout the cytoplasm, is a network of tubules and sacs (cisternae) that are membrane-enclosed. The biggest organelle in the majority of eukaryotic cells, the endoplasmic reticulum is completely encircled by a continuous membrane. Its membrane may make up roughly half of all cell membranes, and the lumen, or cisternal space, that the ER encloses may make up around 10% of the volume of the entire cell. There are two main types of ER, and they each serve a particular purpose inside the cell, as will be covered below. The rough ER, which processes proteins, has ribosomes covering its outside surface.
The radiolabeled proteins were found in the Golgi apparatus if the cells were subsequently briefly treated in medium containing nonradioactive amino acids (a procedure known as a chase). After prolonged chase times, secretory vesicles carrying the radiolabeled proteins from the Golgi apparatus to the cell surface merged with the plasma membrane to discharge their contents outside of the cell.
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aamc practice exam compared to micellular compound 1, compound 2 is structurally more rigid as a result of what type of interaction?
Intermolecular covalent bonding is the interaction between compound 1 and compound 2.
Although much less than intramolecular forces of attraction, intermolecular forces play a crucial role in determining the physical characteristics of molecules, including their melting and boiling points, density, and enthalpies of fusion and vaporisation.
Since several molecules of the micellular compound 1, compound 1, combine to form compound 2, a solid, it can be inferred that the interaction described is intermolecular in nature. Numerous facts, such as the fact that the production of Compound 2 by an oxidant can be stopped by the addition of a reducing agent, indicate that the interaction is the development of a disulfide bond.
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Need help in this too please!! I’m so confused on it lol
The interphase stage in cell division has the following three phases in order:
G1 phase - cell growthS phase - DNA synthesisG2 phase - cell growth.What is interphase in cell division?Interphase in cell division is the phase of the cell cycle in which there are no observable changes in the cell when viewed through the microscope. It is the phase in the cell cycle in which the cell carries out normal cellular activities such as:
obtaining nutrients and metabolizing them,growing and replicating its DNA in preparation for mitosis, etc.The Interphase stage in cell division comprises the following three phases:
G1 phase- this is the phase of cell growthS phase - this is the phase of DNA synthesisG2 phase - this is the second phase of cell growth.Learn more about interphase at: https://brainly.com/question/28307942
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Why amethyst is a mineral?
Answer:
Amethyst is a mineral because it is a naturally occurring inorganic solid that has a definite chemical composition and a characteristic crystal structure. These are the two main criteria used to classify a substance as a mineral. Amethyst is a type of quartz, which is a silicate mineral composed of silicon and oxygen atoms. It is typically purple in color and is used as a gemstone.
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Explanation:
Answer:
Amethyst is a mineral because it's a transparent, coarse-grained variety of the silica mineral quartz that is valued as a semiprecious gem for its violet colour. It is one of the most serene gemstones out there and is believed to bring spiritual healing, clarity, and cosmic energy to all those who wear it.
the mammalian digestive tract has been called an extension of the outside world that you enclose in your body what does this statement mean
The human GI tract has an average length of about 5 m and extends from the mouth to the anus in mammals. 17 The buccal cavity, esophagus, stomach, small intestine, and large intestine are the macroscopic compartments that are divided from one another by sphincters.
Is the digestive system considered to be external to the body?
Due to its open ends—the mouth and anus—which are both to the outside world—the alimentary canal is regarded as existing outside of the body. The mouth, pharynx, esophagus, stomach, and small and large intestines are all included in the canal.
Which of the following best describes how the digestive system works?
Digestion and absorption are the two functions of the digestive system. Food is broken down into small molecules during digestion, and these molecules are then absorbed by the body.
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Why are indoor chemical bazards generally more harmful than outdoor chemical hazards?
Indoor chemical hazards are generally more harmful than outdoor chemical hazards because indoor air is often more concentrated with pollutants, making it easier for them to be inhaled and absorbed into the body. Additionally, indoor air often does not have the same level of ventilation that outdoor air does, meaning pollutants can accumulate more quickly. This increases the chances of serious health effects from exposure to these pollutants.
Answer:
Inside chemical hazards are concentrated in a smaller area. As well, most people spend more time inside than outside.
Explanation:
__________ is water transpired from plants and evaporated from soil.
A)
Evapotranspiration
B)
Sublimation
C)
Evaporation
D)
Transpiration
E)
Respiration
Please select the best answer from the choices provided
A
B
C
D
E
Answer:
A is the correct answer.
Evapotranspiration
Answer:
A. Evaportransporation
When Irish immigrants came to the United States, many attempted to learn the traits and behaviors of the dominant white culture. What does this behavior by the Irish immigrants BEST represent?
A.
pluralism
B.
segregation
C.
assimilation
D.
amalgamation
Answer: C
Explanation: The behavior of Irish immigrants attempting to learn the traits and behaviors of the dominant white culture represents assimilation. Assimilation is the process by which individuals or groups adopt the norms and values of the dominant culture in order to fit in and be accepted. In this case, the Irish immigrants were trying to assimilate into white American culture in order to improve their social standing and opportunities in the United States. This is different from pluralism, where different cultural groups coexist without necessarily adopting the dominant culture, and segregation, where cultural groups are forcibly separated based on race or ethnicity. Amalgamation, also known as racial mixing, refers to the mixing of different racial or ethnic groups through intermarriage.
Answer:
C. assimilation
Explanation:
The behavior by the Irish immigrants best represents assimilation. Assimilation is the process whereby individuals or groups of differing ethnic heritage are absorbed into the dominant culture of a society. In this case, the Irish immigrants attempted to learn the traits and behaviors of the dominant white culture.
Describe how soil salinization occurs. Propose a solution to prevent or remediate soil salinization. Identify one disadvantage of the solution you propose.
Answer:
Soil salinization is the process by which soil becomes contaminated with high levels of salt, which can have negative effects on plant growth and soil productivity. There are several factors that can contribute to soil salinization, including irrigation with saline water, natural deposits of salt in the soil, and the use of certain fertilizers.
Explanation:
Identify the seven types of biomes from their location on a map and description
Answer:
Tropical Rainforest: It stays warm all year. There are too many animals to count and the huge numbers of trees keep their leaves year-round. Many of these forests get so much rain that there isn't even much of a dry season – more like a rainy season and a rainier season.
Temperate Forest: The kind of forest where there are four relatively distinct seasons. Many of the trees shed their leaves in the fall and become inactive through the cold winter. In these forests, you find deer, woodpeckers, and bears, some of which hibernate through the winter.
Desert: Deserts make up the hottest biome, but can also get cold temperatures in winter. Such temperature swings make this an extreme environment, where many animals have to burrow underground to find more stable temperatures in order to survive. Plants and animals here must be able to withstand long periods without water.