Answer: Frontal lobe
Explanation:
Explain the concept of 'natural selection' and what it really means. Specify what
mechanism actually causes the natural selection and why it occurs.
Answer:
Natural selection is a proccess that occurs when an oganism is to weak to survive against other predators in that environementIt has failed to find a suitable nihe and evolution will cause it to become extinct from that geographic area.
Natural selection is the theory behind evolution put forth by Charles Darwin. Given the scarcity of resources in nature, animals with heritable features that promote survival and reproduction will typically produce more offspring than their contemporaries, leading to an increase in the frequency of such traits across successive generations.
Why is natural selection important?Charles Darwin's theory of evolution is known as natural selection. Animals with heritable qualities that aid in survival and reproduction will often generate more offspring than their contemporaries due to the limited resources in nature, increasing the frequency of such traits through subsequent generations.
Favorable features are passed down across generations as a result of natural selection. Natural selection may result in speciation, the process by which one species gives rise to another that is utterly separate.
It is one of the mechanisms that propels evolution and contributes to the understanding of the variety of life on Earth.
Thus, this is the main concept of natural selection.
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CO2 is made up of what two atoms and what is its common name?
Answer:
Carbon Dioxide
Explanation:
name two tissues which are thickened with lignin
Answer: parenchyma (living thin-walled tissue) and collenchyma
Explanation:
a wave of chemical reaction and electrical activity transmitted between noureons is called a_______
The wave of chemical reaction and electrical activity transmitted between neurons is called a nerve impulse.
A nerve impulse is an electrical signal that transmits information between neurons, allowing for communication within the nervous system. The transmission of nerve impulses occurs when neurotransmitters release chemicals that bind to receptors on the receiving neuron, causing an electrical signal to be generated and propagated down the length of the neuron. The nerve impulse is essential to the proper functioning of the nervous system, allowing for the transmission of sensory information, the control of movement, and the regulation of bodily functions such as heart rate and breathing.
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Explain why some of your arterioles dilate while others construct during exercise.
Answer:
It looks at the role of adenosine triphosphate, or ATP, a chemical that can be released by red blood cells and is believed to cause blood vessels to dilate during exercise, when muscles demand more oxygen.
Explanation:
Hope this helped Mark BRAINLIEST!!!
A one-hectare forest community is sampled in early August. The sample yields 12 small trees, 4 types of vines, as well as 17 native shrubs that represent 10 species. What can be estimated from the sample for the shrubs in the forest community?
A. the forest’s productivity
B. the species richness
C. the degree of forest disturbance
D. the stability of the ecosystem
E. the uniformity of species distribution in the ecosystem
Answer:
The correct answer is - B. the species richness
Explanation:
Species richness determines the numbers of different species are present in an ecological community. It is a numerical value or count of different species present in a particular community.
The given information or data can only be used to estimate the species richness in the particular forest community as there is data available about the number of species presnt in this community.
the act of doing what's best for the group is called__
Answer:
being a team player :)
Explanation:
The act of doing what's best for the group is called altruism. This is an act of selflessness were the practice of concern is for the welfare of others.
(from go ole)
name the cell lacking membrane bound nucleus.
Answer:
Prokaryotic cells include archaea and bacteria. They do not have membrane bound nucleus as well as most of the organelles
Ki,ss me if I'm wrong. But dinosaurs still exist right?
Answer:
No, dinosaurs have died out a long time ago!
But did you know that dragonflies used to exsist back then? They were way bigger than they are now. Alot of animals are evolutionalized versions of their prehistoric forms!
Explanation:
Could someone PLEASE HELP ME !
Answer:
c
Explanation:
Can i get brainlists
identify the highlighted structure lymphatic system half head with musculature
The highlighted structure which looks like tonsils are a part of lymphatic system as well as immune system.
The lymph nodes are small, round or bean-shaped structures that are part of the lymphatic system. They play a crucial role in filtering lymph fluid and helping in the immune response by trapping and destroying harmful substances, such as bacteria and viruses.
In the half head with musculature, the lymph nodes in the neck region would be highlighted as they are an integral part of the lymphatic system present throughout the body, including the head and neck.
Additionally, the neck region also contains various muscles responsible for movements such as neck flexion, extension, and rotation. These muscles include the sternocleidomastoid, scalene muscles, and the muscles of the suboccipital triangle, among others. The highlighting of the musculature in the half head may indicate the presence of these neck muscles along with the lymph nodes.
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According to cell theory, all living organisms are made of cells. What do all living organisms have in common when it comes to cells? For example, do all living organisms carry genetic instructions? Do they have similar structures?
According to the cell theory, all living organisms are made up of cells. This theory was first proposed by two German biologists, Theodor Schwann and Matthias Jakob Schleiden, in 1839.
According to the cell theory, all living organisms are made up of cells. This theory was first proposed by two German biologists, Theodor Schwann and Matthias Jakob Schleiden, in 1839. They proposed that all living things are composed of cells and that cells are the basic unit of life. The cell theory is one of the fundamental concepts of biology and is used to explain many of the properties of living organisms.All living organisms have many things in common when it comes to cells. One of the most important things that all living organisms have in common is that they all carry genetic instructions. These instructions are passed down from generation to generation and are responsible for the development and function of all living organisms.Another thing that all living organisms have in common when it comes to cells is that they all have similar structures. All cells have a membrane that separates the inside of the cell from the outside environment. They also have genetic material, which is contained within the nucleus of the cell in eukaryotic cells and within the cytoplasm in prokaryotic cells. Additionally, all cells have a cytoplasm, which contains many of the organelles that are necessary for the cell to function properly.In conclusion, all living organisms have several things in common when it comes to cells. They all carry genetic instructions, which are responsible for the development and function of the organism. They also have similar structures, including a cell membrane, genetic material, and cytoplasm. These commonalities help to explain many of the properties of living organisms.
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In the microprogram for Mic-1, in if_icmpeq3, MDR is copied to H. A few lines later it is subtracted from TOS to check for equality. Surely it is better to have one statement here:
If cmpeq3 Z TOS MDR: rd Why is this not done?
The decision to perform two separate operations, copying the value from the memory data register (MDR) to the H register and then subtracting it from the top of the stack (TOS), instead of using a single comparison statement, might be attributed to the architecture and design choices of the Mic-1 microprogram.
One possible reason is that the Mic-1 microprogram architecture follows a more modular and sequential approach. By separating the steps into distinct microinstructions, it allows for better control and flexibility in handling intermediate results or performing additional operations before executing the comparison.
Additionally, breaking down the operations into separate steps might simplify the microinstruction sequencing and control logic, making it easier to implement and optimize. It could also allow for better error detection and handling by checking intermediate states during execution.
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Which drug may also cause the spread of a AIDS and Hepatitis
Answer:
heroin
Explanation:
hope this helps
What is the chirality in a polysaccharide chain
Answer:
the first answer is a virus
Explanation:
B: What are THREE (3) things your friend could do to reduce his/her risk of developing one of these diseases?
Example: You should eat food that have healthy fat such as avocados so you can still have a source of energy but without risking your health.
URGENT HELPP!!!!
Answer:
Exercise regularly, eat a healthy diet and avoid stress.
Explanation:
Exercise regularly, eat a healthy diet and avoid stress are the things that can reduce the risk of developing these diseases because these three things make our body strong and healthy which can fight against these diseases. Regular exercise makes our body strong as well as prevent us to become fatigue. Eat healthy and optimum amount of food fulfill all our needs of body and our body work more efficiently. Stress has a very adverse effect on our health so by avoiding it, we can save ourselves from many diseases.
Which of the following is NOT considered to be a part of the accessory structures of the eye?
A) Conjunctiva
B) Palpebrae
C) Cornea
D) Lacrimal caruncle
The cornea is NOT considered to be a part of the accessory structures of the eye. The correct answer is (C).
The accessory structures of the eye do not include the cornea. It is an essential component of the eye's visual system since it is the transparent outermost layer that shields the iris, pupil, and anterior chamber. Examples of the accessory structures of the eye are the conjunctiva, palpebrae (eyelids), and lacrimal caruncle.
Conjunctiva: This thin, translucent membrane borders the inner of the eyelids and covers the front surface of the eye.
Palpebrae, sometimes referred to as eyelids, are moveable folds of skin that cover the eyes, disseminate tears, and help control how much light gets in.
Cornea: This transparent, dome-shaped layer at the front of the eye, which is not a component of the accessory structures, is in charge of reflecting light and guarding the eye.
Lacrimal caruncle: This little, rosy-colored clump of soft tissue is found in the inner corner of the eye. It generates a yellowish oily secretion known as the lacrimal caruncle secretion and has sweat and sebaceous glands.
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ASAP PLEASE HELP!!!!
When rock in the interior of the planet is heated to high enough temperatures, what occurs? Select the best answer from the choices below.
a it gets hotter and sinks into a trench
b the rock melts to create magma
c it forms new mountains underwater
d it causes glaciers to melt
Answer:
B !
Explanation:
I'm basing this off of a lesson I took two years ago, but the answer is B! The interior of Earth is rumored to be filled with magma as a way to have convection currents in itself, and to move the tectonic plates/ create the tectonic plates, if I remember correctly.
If i'm wrong I can still prove why it's not the other choices.
It's not A becuase when rock gets hotter, it rises, and when it cools, it sinks.
it's not C becuase it said "interior of the planet", which it may be referencing somewhere having to do to below the crust. as well, you need to cool rocks as to make it solid, not heated up rocks. but even then, mountains are made by the plates.
it's not D becuase glaciers are affected by climate change and occurrences the biosphere, not the interior of the planet.
Solar system included all of the following except what?
Answer: Stars?
Explanation: I think it is stars because there is only one star in our solar system. I don't know for sure if it is, but I think it is. Don't be too sure of my answer.
Compare the concentration of connective tissue cells found in bone with the concentration of those found in blood.
Answer: CONNECTIVE TISSUE is the most abundant tissue in the body which are widely separated from each other and intercellular substance (matrix) is present in considerably larger amounts. The principal cell of connective tissue are fibroblasts which makes fibres found in almost all connectiv tissues. Some are solid and strong (bone), while others are fluid and flexible( blood).
Explanation:
Connective tissues usually contain fibres present in the matrix which may be of semisolid jelly-like consistency or dense and rigid, depending upon the position and function of the tissue. There are three main types of connective tissue which include:
--> Loose connective tissue
--> Dense connective tissue and
--> specialised connective tissue.
The bone and the blood are considered to be an example of specialised connective tissue. This is so because they both contain a number of different tissues with specialized cells and unique ground substances.
The BONE consists of osteoblasts, osteocytes, and osteoclasts. It is considered to be a specialised connective tissue because the bone cells are surrounded by a matrix of collagen fibres strengthened by inorganic salts, especially calcium and phosphate.
The BLOOD consists of red blood cells, white blood cells, platelets. It is considered to be a specialised connective tissue because the blood cells are surrounded by fluid matrix known as plasma and connecta with other cells through its transport functions.
In COMPARING the concentration of connective tissue cells or bone and blood, the connective tissue cells of bone comsist of fibre and collagen which makes it dense and rigid while the connective tissue cells of blood does not contain any fibre, therefore it's flexible.
6. Consider the following statement. "G- bacteria are more likely to be naturally protected from a molecule that hinders bacterial growth." Do you AGREE or DISAGREE with that statement? 7. In 1-2 sentences, explain why you agree or disagree with the statement in question 6. You may want to use terms like outer membrane, inner membrane, cell wall, porins, membrane proteins, and/or cytosol in your answer.
The presence of an outer membrane in Gram-negative bacteria does not inherently confer higher natural protection against growth-inhibiting molecules compared to Gram-positive bacteria. Various factors determine bacterial susceptibility to such molecules.
In Gram-negative (G-) bacteria, the presence of an outer membrane provides an additional barrier that can limit the entry of molecules into the cell. However, this outer membrane does not necessarily confer higher natural protection against growth-inhibiting molecules compared to Gram-positive (G+) bacteria.
G- bacteria have an outer membrane composed of lipopolysaccharides (LPS) and porins, which can act as selective channels for the entry of certain molecules. However, many growth-inhibiting molecules can still penetrate the outer membrane through porins or other transport mechanisms. Inside the cell, both G- and G+ bacteria possess an inner membrane and cytosol where the actual targets of growth-inhibiting molecules are located.
The susceptibility of bacteria to growth-inhibiting molecules is determined by various factors such as the molecule's mechanism of action, the presence of efflux pumps, and the bacteria's overall defense mechanisms. Therefore, it is incorrect to claim that G- bacteria are inherently more protected from growth-inhibiting molecules based solely on the presence of their outer membrane.
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Why might some siblings in a family show the trait of albinism while others don't?
Answer:
Even if both parents carry the gene, the chance of each of their children being born with albinism is one in four. If just one parent has the gene and the other parent has a normal pigment gene, their children won't have oculocutaneous albinism.
Explanation:
categorize each carbohydrate listed as either a monosaccharide, disaccharide, or polysaccharide.glucosecellulosesucrosefructosestarch
A brief explanation of each category:
Monosaccharide: Monosaccharides are the simplest form of carbohydrates and cannot be further hydrolyzed into smaller units. They consist of a single sugar molecule. Glucose and fructose are examples of monosaccharides.
Disaccharide: Disaccharides are formed by the combination of two monosaccharide units through a glycosidic bond. Sucrose is an example of a disaccharide, composed of glucose and fructose.
Polysaccharide: Polysaccharides are complex carbohydrates composed of many monosaccharide units linked together. They can be hydrolyzed into smaller sugar units. Cellulose and starch are examples of polysaccharides. Cellulose is a structural polysaccharide found in the cell walls of plants, while starch is a storage polysaccharide in plants.
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how do dominant autosomal genes affect a punnett square and the probability?
Dominant autosomal genes have a specific effect on Punnett squares and the probability of inheriting certain traits. When a dominant allele is present, it only requires one copy of the allele to be expressed in the phenotype. In Punnett squares, the dominant allele is represented by a capital letter, while the recessive allele is represented by a lowercase letter.
When a parent with a dominant allele mates with a parent with a recessive allele, the Punnett square shows the possible combinations of alleles that their offspring can inherit. In this case, if the dominant allele is present in one of the parents, it will always be expressed in the phenotype of the offspring. Therefore, the probability of inheriting the dominant trait is 100% for offspring that receive the dominant allele.
For example, if a parent with the dominant allele (AA) mates with a parent with the recessive allele (aa), all of their offspring in the Punnett square will have the genotype Aa, and they will express the dominant trait. The probability of inheriting the dominant trait is 100% for these offspring.
Dominant autosomal genes in Punnett squares ensure that the dominant trait is expressed in the phenotype of the offspring when at least one copy of the dominant allele is present.
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True or False?
The convection currents in the mantle
are mainly caused by heat coming
from the core.
Answer:
true
Explanation:
convection currents occur when a heated fluid expands, becoming less dense, and rises. The fluid then cools and contracts, becoming more dense, and sinks
heat go up, cold go down. they cycle.
Answer:
False
Explanation:
Which of the following is true about cognitive development in early adulthood? a. Pruning of synapses, along with growth and myelination of stimulated neural fibers, progresses at a faster pace in early adulthood than in adolescence b. Slowing of the cognitive system first becomes evident around age 25 c. For young adults who do not attend college, cognitive growth is unlikely d. The cognitive changes of early adulthood are supported by further development of the cerebral cortex, especially the frontal lobes
The correct option is D. The cognitive changes of early adulthood are supported by further development of the cerebral cortex, especially the frontal lobes. During early adulthood, the brain continues to undergo development, particularly in the cerebral cortex, including the frontal lobes.
Cognition refers to the mental processes and activities associated with acquiring, processing, and using knowledge and information. It encompasses a wide range of mental abilities, including perception, attention, memory, language, problem-solving, decision-making, and reasoning. Cognitive processes involve the brain's ability to gather and interpret sensory input, store and retrieve information from memory, and engage in complex thinking and problem-solving tasks.
Cognitive functioning is crucial for various aspects of human life, such as learning, communication, problem-solving, creativity, and decision-making. Understanding cognition has implications for fields like psychology, neuroscience, education, and artificial intelligence
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out of these three gases ( carbon dioxide, hydrogen gas, and methane) which could be a component of water
Answer:
Methane
Explanation:
Methane could be a component of Water because it burns in the air to form H2O which is Water. If you see any fault in my answer please let me know. Thanks. Have a good day.
Pleaseeeeee helpppppppppppppppp
*Post this one more time, the characters are limited*
PART 5:
A: Cougars, also known as mountain lions, are apex predators that play an important role in maintaining the balance of ecosystems. In their natural habitats, cougars help to regulate the populations of other animals, such as deer and elk, by preying on them. This, in turn, can have important effects on plant populations.
One of the key ways in which cougars influence plant populations is by reducing the population densities of herbivores, such as deer, that can have significant impacts on plant communities. High densities of herbivores can lead to overgrazing, which can reduce the abundance and diversity of plant species, and even lead to local extinctions. By preying on herbivores, cougars can help to maintain more balanced herbivore-plant interactions, which can promote the growth and survival of plant populations.
Cougars can also indirectly benefit plant populations by altering the behavior of herbivores. The presence of cougars can cause herbivores to alter their patterns of movement and feeding, which can reduce the impact of herbivores on plant communities. For example, herbivores may avoid areas where cougars are known to hunt, or they may feed more selectively to avoid being detected by cougars. These changes in behavior can help to reduce the impact of herbivores on plant populations, and can promote the growth and survival of plant species.
Furthermore, cougars can help to promote biodiversity by creating a more complex and diverse ecosystem. By preying onherbivores, cougars can indirectly promote the growth and survival of smaller animals, such as rodents and birds, that may play important roles in pollinating plants or spreading seeds. In addition, cougars can help to maintain the natural balance of ecosystems by preventing the overexploitation of certain plant and animal species by herbivores.
In summary, cougars are important for plant populations because they help to regulate herbivore populations and promote more balanced herbivore-plant interactions. By preying on herbivores, altering their behavior, and promoting biodiversity, cougars can help to maintain healthy and diverse plant communities, which are essential for the functioning of ecosystems and the provision of ecosystem services. Therefore, conservation efforts aimed at protecting and restoring cougar populations can have important benefits for plant populations and the wider environment.
B: Overhunting of cougars can have significant impacts on plant populations and the wider ecosystem. As apex predators, cougars play a crucial role in regulating the populations of other animals, such as deer and elk, which can have important effects on plant populations.
If cougars are overhunted, the populations of their prey species may increase, leading to overgrazing and other negative impacts on plant communities. High densities of herbivores can lead to reduced abundance and diversity of plant species, and even local extinctions. This, in turn, can have cascading effects on other species that depend on these plants for food or habitat.
The loss of cougars can also have indirect effects on plant populations by altering the behavior of other animals. For example, in the absence of cougars, herbivores may no longer avoid certain areas or modify their feeding behavior, leading to increased damage to plant communities. This can further reduce the abundance and diversity of plant species, and have negative effects on other species that depend on these plants.
Additionally, cougars can promote biodiversity by creating a more complex and diverse ecosystem. By preying on herbivores, cougars indirectly promote the growth and survival of smaller animals, such as rodents and birds, that may play important roles in pollinating plants or spreading seeds. If cougars are overhunted, the loss of these indirect effects can further impact plant populations and ecosystem functioning.
In summary, overhunting of cougars can have significant negative impacts on plant populations and the wider ecosystem. By regulating herbivore populations and promoting balanced herbivore-plant interactions, cougars play an important role in maintaining healthy plant communities and promoting biodiversity. Therefore, efforts to conserve and manage cougar populations are essential for sustaining healthy ecosystems and ensuring the continued provision of ecosystem services.
PART C:
Population Sizes over Time
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| | |
| Cougars | Trees |
| | |
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0 20 40
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Evidence for Evolution:Quesuull The hip bone in whales, the leg bone in snakes, and the appendix in humans are examples of:
Answer:
The correct answer is - vestigial structures or organs.
Explanation:
Vestigial organs are structures or the organs are body parts that had once important function but now have no apparent function. These are body parts that look like these are residual parts from a past ancestor.
The hip bone in whales, the leg bone in snakes, and the appendix in humans are thought to have once important functions but now have no apparent function and are vestigial organs.
Following fertilization and two rounds of cell cleavage, each of the four cells of a frog embryo has a centriole that is preparing for the next cleavage. The centriole in each of these cells can trace its origins back to the original centriole provided by the _______ prior to the first cleavage. Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices secondary oocyte sperm ootid oogonium primary oocyte
Answer:
sperm
Explanation:
Centrioles are cylindrical organelles that play a major role during cell division, where they work to form the centrosome which duplicates and moves to opposite ends of the cell. The proximal centriole provided by the sperm cell mediates the separation of chromatids during the first cleavage of the fertilized egg. Upon fertilization, the proximal centriole forms the aster rays where microtubules act as a guide for the migration of the female pronucleus.