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iren [92.7K]
4 years ago
5

Researchers randomly divide participants into groups. Each group takes a different amount of omega-3 fatty acid supplements dail

y for a month. One group receives a placebo. The researchers measure the impact on cholesterol levels in the blood.
What is the purpose of random assignment in this experiment?

A, To produce treatment groups with similar characteristics
B, To ensure that all people with high cholesterol have an equal chance of being selected for the study
C, To increase the accuracy of the research results and prevent skewness in the data
Biology
1 answer:
zhenek [66]4 years ago
3 0

I think that the correct answer is C) To increase the accuracy of the research results and prevent skewness in the data. It is just a research which may lead to valuable information and perhaps another more relevant information.

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Consider the model of the oxygen cycle as it moves through the various spheres of Earth. One assumption we can make after analyz
Afina-wow [57]

Answer:

B)Photosynthesis releases oxygen into the atmosphere while aerobic respiration removes oxygen from the atmosphere.

Explanation:

Only option B satisfies the answer to the question.

We know that photosynthesis is the process whereby green plants manufacture their foods in the presence of carbon dioxide and sunlight. Carbondioxie in the environment is used to manufacture food in plants. The bye product of photosynthesis is oxygen gas. Oxygen gas is used for aerobic respiration in animals and is essential for their life. This way photosynthesis adds to the pool of oxygen in the atmosphere and aerobic respiration removes from the pool.

6 0
3 years ago
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A valley glacier spreads out over a large island or continent.
Yakvenalex [24]

Answer: False

Explanation: Valley glaciers are not known to spread throughout a whole continent. A valley glacier is usually formed within a mountain range. They are fed by ice caps and generally shaped as a narrow ribbon or stream of ice between two valley walls. Valley glaciers are commonly found in Alaska and in parts of the Alps.

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Please answer Asap.
Natalija [7]

Production of energy using water power

Using electricity or energy-saving products, creation of technology to capture sulfur dioxide are the processes that can be taken into account.

<h3><u>Explanation</u>:</h3>

Acid rain is a very serious issue in the urban areas now a days. Acid rain forms due to the excessive production of gases like sulphur dioxide, nitrogen oxides etc which are beyond the level of absorption by the environment. This gases go up in the atmosphere and they mixes with cloud water to form corresponding sulphuric acid and nitric acid. These acids come along the rain and decrease the pH of the water bodies as well as soil.

If we start using water as the source of our energy production, then we can eliminate the use of coal and other fossil fuels which are chief sources of these gases.

If we can grow some technology to capture these gases before they are released into the environment, then also there will be less problems. Technologies like alkali bath are not so operative in large scales.

We can use electricity in boilers and other places where still, fossil fuels are brunt to produce the heat so that sulphur oxides don't come out.

6 0
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Answer:

True

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The peak of Mount Everest is made up of rock that was once submerged beneath the Tethys Sea, an open waterway that existed between the Indian subcontinent and Asia over 400 million years ago.

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What is the best example of a hypothesis leading to new experimental methods
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Thomas Hunt Morgan continued the genetic research of Gregor Mendel, but Morgan used fruit flies.

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