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Simora [160]
3 years ago
15

What is the main purpose of controlled variables in an experiment

Biology
1 answer:
Vika [28.1K]3 years ago
6 0
A controlled variable is not changed throughout an experiment. It is there so that the other variables being tested on can be better understood.
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Which of these conditions indicate positive feedback has occurred?
aleksklad [387]

Answer;

A) Blood pressure decreases greatly; blood flow to the heart is inadequate, and blood pressure decreases.

Explanation;

-With negative feedback, the output reduces the original effect of the stimulus. While in a positive feedback system, the output enhances the original stimulus.

-Negative feedback is the most commonly used feedback loop in the body. Negative feedback is used to negate or counteract a stimulus without completely eradicating it.

-One key difference between the two feedback is that positive feedback loops are used to eradicate a stimulus. Another key difference is that responses through positive feedback become more amplified over time. So once a stimulus activates a positive feedback loop it is not turned off until the stimulus is completely removed.

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weeeeeb [17]

Answer:

Gravitational force

Explanation:

Gravitational force is the force that attracts an object down to the earth. It’s also the reason why we don’t float on this planet. This force is also why anything that isn’t thrown up must come down.

In space and other planets with little or no gravitational force ,organisms float over there which makes its inhabitation by organisms very difficult.

4 0
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Doss [256]

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The higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem.

Explanation:

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You divide it by two 
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The answer is A. Hope this helps you out.
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