Select the correct answer.
What will happen to the ecological efficiency of an ecosystem, if the number of organisms in any trophic level is different from the ideal number?
OA. It will remain the same, as there cannot be any imbalance in the ecosystem.
OB.
It will remain the same, as the ecological efficiency never changes.
It will differ due to an imbalance in the number of producers and consumers.
O C.
Answer:i would say that it is c It will differ due to an imbalance in the number of producers and consumers.
Which country or region is associated with each body of water?
Match each item in Column A to the answer in Column B.
The country or region associated with each body of water is given below as follows:
Lake Tahoe = Eastern United statesOhio river = Western United statesHudson bay = CanadaArctic ocean = Canada, Western United StatesColorado river = Western United statesWhat is the Arctic Ocean?The Arctic Ocean is Earth's northernmost body of water that encircles the Arctic and flows beneath it. Most of the Arctic Ocean is covered by ice throughout the year—although there have been changes due green house effects as temperatures climb. Pale and stark on the surface, the Arctic Ocean is home to a stunning array of life.
The U.S., Canada, Greenland, Iceland, Norway, and Russia all have territories that reach into the Arctic Ocean.
The Arctic Ocean is the smallest and shallowest of the world's five major oceans that spans an area of approximately 14,060,000 km² and is known as the coldest of all the oceans.
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The American Cancer Society reports that approximately what proportion of cancer cases could be prevented with a nutritious diet and regular physical activity?
Group of answer choices
Approximately one-tenth
Approximately one-fourth
Approximately one-third
Approximately one-half
Approximately one-half of the cancer cases could be prevented with a nutritious diet and regular physical activity and is therefore denoted as option D.
What is Cancer?This is referred to as a medical condition in which the cells of the body divide in an uncontrolled manner and then spreads to other parts of the body and is treated using chemotherapy and other techniques.
Cancer according to WHO can be prevented when adopting a nutritious diet and regular physical activity is practiced by individuals as it helps us to keep fit and healthy.
The American Cancer Society reports that approximately 50 percent which is equal to one-half of cancer cases could be prevented by living such healthy lifestyle which therefore makes option D the most appropriate choice.
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Which is not a cause of water
pollution?
A. combustion from engines of cars
B. oil spills from boats in the ocean
C. chemicals from industrial waste
D. pesticides used in agriculture
Why do "You Think" some bacteria grow better in your gut rather than your lungs or skin?
Million of bacteria grow in our gut and each have their own set of genes , that helps them to survive acidic environment of the gut. They can have both beneficial and harmful effect to your health.
While the bacteria in lungs causes symptoms similar to the cold or flu, it can be more severe and typically last longer. Immune system will typically be able to clear a viral lung infection over time. Infections can be cured by using antibiotics also .
On the other hand bacteria on skin can survive up to 20 minutes .Human skin also act as barrier that limits invasion and growth of pathogenic bacteria. Human body has a lot of defenses to keep the bad bacteria from coming in too far through these openings.
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PLEASE ANSWER ASAP ITS A TEST:Which label belongs in the area marked X? Obreathe in from atmosphere O produce themselves Oeat other organisms O absorb from soil
RIP bro I hope u pass the test gl
How does competition drive
natural selection?
A. Competition causes more death of organisms
which leaves room for other species to move in.
B. It causes new niches to become open.
C. This causes the individuals best suited for
competition to survive while the other die off.
D. The use of different resources causes new
developments of organisms.
The competition drive natural selection this causes the individuals best suited for competition to survive while the other die off. Thus, option C is correct.
What is natural variation?
Genetic variation allows for differences between individuals due to differences in the inherited DNA. Genetic variation has been defined as difference in the DNA within individuals or populations.
Genetic variation has the presence of the variation in the gene sequences between the individual organisms of a species. Skin color, hair color, bloody type, dimples all are the examples of genetic variations that seems in a human population.
Therefore, The competition drive natural selection this causes the individuals best suited for competition to survive while the other die off. Thus, option C is correct.
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Describe the process of pollination.
Are lipids hydrophilic or hydrophobic? Explain why.
What is the difference between small, controlled lab experiments versus an ecosystem-scale experiment?
The major difference between the small, controlled lab experiments versus an ecosystem-scale experiment is the number of variables.
Experiments are the scientific procedures carried out in order to make some discovery, test any hypothesis or demonstrate or mimic any natural process. Experiment is a step by step process that requires strict conditions.
Variables in an experiment are the factors, characters or some condition that can be changes according to the need or demand of the experiment. There are three types of variables: Independent, Dependent and Controlled. Independent variable can be changes manually, dependent variable is the one whose change affects the experiment and controlled variables are the one that remain constant.
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Choose a branch of aquatic science and research its history. Then, create a timeline of the events you discover on a separate piece of paper. You should have at least ten events. Pictures for each event should also be included as part of the
timeline. The pictures can be hand drawn, printed out, or cut out from magazines. You may decide to use an online builder such as the one here, DO NOT use either of the timelines seen in the previous lessons. All references should be properly
cited.
Answer: The timeline required is as follows:
c. Imperialism
b. Major events in the Industrial Revolution
d. Major events of the Civil War
e. Transcontinental Railroad.
a. Automobile and Henry Ford (development from the bicycle)
Explanation: In the timeline given above here are short explanations of the events.
c. Imperialism
When one nation takes over another political and economic gains.
b. Major events in the Industrial Revolution
The founding of cotton mills and the coming up of industrial towns.
d. Major events of the Civil War
These were the battles between the north and south.
e. Transcontinental Railroad.
It was completed right after the end of the civil war. It connected the nation with the railway track.
a. Automobile and Henry Ford (development from the bicycle)
The automobile was a 20th-century invention that brought modernity. It was the beginning of modern assembly line production in the US.
Investigating Energy Systems
Harnessing Human Energy Chapter 1 Lesson 1.2
Reasoning Tool
Possible subclaims:
The Battery System does have energy.
or
The Battery System does not have energy.
The Hand-Crank Generator System does have energy.
or
The Hand-Crank Generator System does not have energy.
The Solar Cell System does have energy.
or
The Solar Cell System does not have energy.
Evidence
(observations about whether the system does or does not have energy)
This matters because . . .
(How does this evidence support the subclaim?)
Therefore, . . .
(subclaim)
In regards to Investigating Energy Systems, the Possible subclaim is Option C: The Solar Cell System does have energy.
The Evidence: The PV cells on a solar panel capture the energy from the sun's rays as it shines on the panel. This matters because produces electrical charges that are propelled by a moving internal electrical field in the cell, which results in the flow of electricity.
Therefore, Solar Cell System is one that possess some amount of energy.
What energy is a solar cell?Any device that directly converts the energy of light into electrical energy through the photovoltaic effect is referred to as a solar cell, sometimes known as a photovoltaic cell.
Photovoltaics (PV), commonly referred to as solar electricity panels, absorb solar energy and turn it into usable electricity for your home.
Therefore, Since Nuclear fusion occurs in the sun and produces solar energy. A PP (proton-proton) chain reaction is what causes this process to produce such a large amount of energy.
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An amoeba is unicellular; therefore, it is an organism.
True or false
Answer:
True. This entity has been discovered and shows many of the characteristics of living things including growth, organization, and the ability to maintain homeostasis.
Explanation:
Hope it helps! =D
Describe the structure of the nucleus, chromosomes, and ribosomes, and explain their functions.
REAL ANSWERS ONLY! NO LINKS!
Answer: i got you
Explanation:
would this help A cell is known as the basic structural, functional and biological unit of all living organisms. It is referred to as the smallest unit of life. Cells are known as the building blocks of living organisms. There are basically two different types of cells, prokaryotic and eukaryotic
an individual with the condition of myasthenia gravis is faced with an autoimmune disorder in which the body defenses attack acetylcholine receptors on muscle cells. what would be the expected effect on calcium levels near contractile proteins, following the arrival of an electrical impulse at those neuromuscular junctions?
When acetylcholine binds to its receptor, the muscle is stimulated and contracts. In myasthenia gravis, immune proteins called antibodies block, alter, or even destroy acetylcholine receptors at the neuromuscular junction, preventing the muscle from contracting.
How does myasthenia gravis develop in relation to the immune system?Myasthenia gravis causes antibodies to be produced by your immune system that either block or harm many acetylcholine receptor sites in your muscles. Because there are fewer available receptor sites, your muscles get fewer nerve impulses, which results in weakening.
Myasthenia gravis (MG) is a long-term autoimmune disorder in which antibodies prevent the nerves' ability to communicate with the muscles, weakening the skeletal muscles as a result. Acetylcholine receptor antibodies are the main cause of myasthenia gravis, a neurological disorder that weakens and exhausts the voluntary muscles.
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Enzymes take on very important shapes/conformations and require cofactors and coenzymes to properly fold. What are some ways you could use the information about enzymes shape and specificity to design a treatment against a bacterial infection?
The ways in which one could use the information about enzymes shape and specificity to design a treatment against a bacterial infection is by making the antibacterial to be able to denature it.
What is Enzyme?This is referred to a biological catalyst which is involved in speeding up the rate of a reaction and is proteinous in nature.
Enzymes are substrate specific which is why they only bind to a substrate which has a similar shape and the production of antibacterial will employ the use of agents which will denature it. The change in shape will make it impossible for the bacteria to perform certain metabolic reactions thereby leading to its death.
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what is sexual reproduction system
The process of creating new creatures through the union of the genetic material from two individuals of different sexes is known as sexual reproduction.
The majority of creatures have chromosomes, which contain the genetic material, in the nuclei of their reproductive cells, known as gametes, which mate to produce a diploid zygote. The fusion of a haploid female gamete (egg cell) with a haploid male gamete is the process of sexual reproduction.
These gametes combine during fertilization, creating a diploid zygote as a consequence. A unique organism that is genetically separate from its parent species emerges from the zygote. Contrast this with asexual reproduction, in which an organism reproduces without the use of gametes and the progeny are identical clones of the parent.
However, sexual reproduction outperforms asexual reproduction in terms of boosting genetic diversity and enlarging the gene pool. Additionally, it guarantees that a species' chromosomal count will not change over successive generations. The two main methods of sexual reproduction are conjugation and syngamy.
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What is the main component of the gel?
O Cellulose from flowering plants
O Agarose from seaweed
O Sugar from fruits
O Gelatin from cow and pig ligaments and tendons
Agarose from seaweed is the main component of the gel.
The correct option is B.
What is seaweed is good for?The use of seaweed as a component in food is becoming more widespread. The best nutritional source of iron, which supports the thyroid gland, is in this food. It also contains antioxidants that shield your cells from oxidative stress, along with additional minerals and vitamins like vitamin K, B vitamins, zinc, and iron.
Which seaweed is healthiest?Iodine, which supports healthy thyroid function, can be found in red seaweeds. Additionally, they contain heme copper (a form of iron that can actually prevent iron-deficiency anemia). If you live a vegans, vegetarian, or other plant-based lifestyle, these incredible nutritional advantages will be extremely beneficial to you.
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Which of the following is the most significant effect of satellite technology on weather prediction?
O the five-day forecast for hurricane intensity now has an accuracy of less than 1% for wind speed
O multiple computer models can make the same predictions well in advance of storms
O the exact location of a tornado can be predicted 6 hours in advance
increased preparedness can save lives and property
The most significant effect of satellite technology on weather prediction is the exact location of a tornado can be predicted 6 hours in advance increased preparedness can save lives and property.
In addition to providing in-flight phone service for aircraft, satellites are frequently the primary means of voice communication in rural areas and in places where phone lines have been damaged as a result of a disaster. Cell phones and pagers also get their primary timing from satellites.
Along with this, satellites help meteorologists to prevent casualties before weather calamities in places that are prone to such disasters.
How is weather predicted by satellites?
The primary purpose of the geostationary satellites is to take pictures of the Earth, which, when looped together, enable meteorologists and the general public to observe the development and motion of clouds and storms in the atmosphere. For the nowcasting or short-term forecasting, of severe weather, this information is very important.
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which option describes a step in designing experimental procedures?
Writing a hypothesis that must be true can describe a step in designing experimental procedures.
What does a research hypothesis entail?A hypothesis outlines your expectations for the results of your investigation. It is a speculative, untested response to your research question. You might need to develop a number of hypotheses for some research projects that speak to various facets of your research issue.
Simple hypothesis, complicated theory, direction-based theory are types of a hypothesis.
What role does a hypothesis play in research?As previously said, a hypothesis serves as a response to the research question and directs the gathering and analysis of data. Researchers can use hypotheses to both identify relationships between variables and forecast relationships based on theoretical principles and/or empirical data.
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White blood cells, called leukocytes, are very different in structure and function than red blood cells. White blood cells help fight infections, parasites, and bacteria. They do this by engulfing pathogens and synthesizing antibodies which are made from proteins. In addition white blood, cells can reproduce unlike red blood cells.
Many white blood cells can't divide and they have the ability to reproduce on their own.
How do white blood cells reproduce?White blood cells are not similar to other types of cells that are present in our body. They act like single-cell organisms which can move on their own and can feed on other cells and bacteria. Many types of white blood cells can't reproduce on their own so they are produced in the bone marrow. In a person that has normal bone marrow, the number of white blood cells can double within hours. It is a type of blood cell that is produced in the bone marrow and found in the blood lymph tissue. White blood cells are part of the immune system of our body. White Blood Cell protects Red Blood Cell, as it tries to protect the red blood cells from pathogens.
So we can conclude that the cells which can move freely and feed on pathogens and bacteria that can harm our body are known as white blood cells.
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Two students were able to identify an organism to differing levels of classification. Student "A" was able to identify the organism to the level of "class." Student "B" was able to identify the organism to the level of "order". Which student has been able to classify the organism more accurately? Explain.
Student B was able to identify the organism to the level of order.
Contemporary-day scientists base their classifications specially on molecular similarities. They group collectively organisms that have comparable proteins and DNA. Molecular similarities show that organisms are related. In other words, they're descendants of a common ancestor in the beyond.
Aristotle come to be the primary scientist who attempted to categorise organisms. He subdivided flowers into 3 agencies: shrubs, herbs and wooden. He subdivided animals into their habitat: air, water and land.
inside the 18th century, Carl Linnaeus posted a machine for classifying dwelling subjects, which has been superior into the modern-day category system.
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Which of the following statements best explains
why the lower mantle of Earth is much more
rigid and dense than the upper mantle?
A. The lower mantle is older than the upper
mantle.
B.
The lower mantle is cooler than the upper
mantle.
C.
The lower mantle is under more pressure
than the upper mantle.
D. The lower mantle is farther from the core
than the upper mantle.
The following statements best explains why the lower mantle of Earth is much more rigid and dense than the upper mantle is because the lower mantle is older than the upper mantle and is denoted as option A.
What is Mantle?This is the region which is found in the interior of the earth and it is bounded below by a core and above by a crust. It consists of bulk of solid substances and the density varies.
The lower mantle has a higher density as a result of it being older and more substances accumulating to make it more rigid therefor masking option A the correct choice.
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i dont know if it is group 2 or group 14
The group 2 Elements The Alkaline Earth Metals and the group 14 carbon.
Once you have the atomic number of an element you can find its period number and group number. The periodic number refers to the number of shells an electron in an element occupies, while the periodic number refers to its valence electrons. Group 14 is the carbon family. The five members are carbon silicon germanium tin and lead.
All of these elements have four electrons at their limited energy levels. Of the group 14 elements, only carbon, and silicon form bonds as electron-sharing non-metals. The carbon family is also called carbon group 14 or group IV. This family was called petrel or tetragon because the elements belonged to group IV or as a reference to the four valence electrons of the atoms of these elements. This family is also called crystallins.
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The human stomach is an organ that helps us digest food. The stomach is one of many organs involved in the process of digestion. Others include the esophagus, small intestine, pancreas, and gall bladder. What name is given to a set of organs that work together to perform a specific function?
A. System
B. Phylum
C. Centriole
D. Tissue
Attaching the appropriate amino acid to a tRNA (i.e. tRNA charging) involves interactions between:
Attaching the appropriate amino acid to a tRNA (i.e. tRNA charging) involves interactions between activated tRNA and mRNA. This happen during the translation.
mRNA- Single-stranded RNAs of the kind known as messenger RNA, or mRNA, are used to make proteins. mRNA is created during transcription from a DNA template.
Activated tRNA- The process of attaching an amino acid to its corresponding transfer RNA is known as amino acid activation, commonly known as aminoacylation and or tRNA charging (tRNA).
Amino Acid- Small chemicals known as amino acids serve as the foundation for proteins. Proteins carry out several crucial chemical processes as well as providing structural support for the cell. Twenty distinct smaller, simpler amino acid combinations make up the molecules that make up each protein.
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Which of these waves have a greater amplitude?
1.
2.
3.
4.
Answer: number 1
Explanation: the higher the crest( the top) the higher the amplitude
Answer:
The answer to this question is:1
Explanation:
Because 1 has the lines reaching top and bottom line meaning it has a greater amplitude
List the following 4 materials in order of decreasing specific heat.
1. Iron, granite, dry air and liquid water
2. Liquid water, dry air, granite, iron
3.Liquid water, granite, dry air and iron
4. Iron, dry air, liquid water and granite
Answer:
3
Explanation:
lower air lesser the temp
Colorblindness is due to a sex-linked recessive allele. What are the chances of a colorblind father and a carrier mother having a child with colorblindness?1/41/23/40
The cross of the father who is homozygous for colorblindness and the mother who is heterozygous for colorblindness (carrier) are the following offspring:
50% CC - homozygous for colorblindness and 50% heterozygous for colorblindness (carrier).
Answer - The chances of having a child with colorblindness is 1/2.
Perform the following operation.
10^4x 10^8
A. 10-4
B. 1032
C. 10^(1/2)
D. 10¹2
The answer is [tex]10^{12}[/tex].
How to perform the operation?Given,
10^4x 10^8
Solution:
10^4x 10^8 = [tex]10^{4+8}[/tex]
= [tex]10^{12}[/tex]
(Since the base value is the same, the powers are added).
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