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Leno4ka [110]
3 years ago
6

What is the purpose of having a control and a variable in an experiment?

Biology
1 answer:
11Alexandr11 [23.1K]3 years ago
7 0

a control helps to increase the reliability of the results. it allows a scientist to compare it to other group(s) in an experiment. if a scientist notices a significant different btwn the control and the other groups, he can logically conclude that the independent variable has an impact on the dependent variable.

a variable is any factor, trait or condition that can exist in differing amounts or types. there are usually three tpes of variables in experiments: the independent, dependent and contolled. the independent variable variable is the one that is changed by the scientists to figure it's affect on something.

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5 0
4 years ago
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How many of Earth's spheres does
Tpy6a [65]

The carbon cycle moves through virtually all of the earth's spheres.

<h3>Carbon cycle</h3>

There are 4 majors spheres of the earth:

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The carbon cycle moves through the air (atmosphere), oceans (hydrosphere), organisms (biosphere), and the soil (geosphere).

Thus, the carbon cycle moves through all the spheres of the earth.

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6 0
2 years ago
Alligators living in a pond is a example of<br><br> an ecosystem because
scoundrel [369]

Answer: Alligators living in a pond is an example of natural habitats

6 0
3 years ago
Identify the events that lead to a lake-effect snow.
Pavel [41]

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<h3>Which are the key factors in lake snow affect?</h3>

Wind direction is a key component in determining which areas will receive lake effect snow. Heavy snow may be falling in one location, while the sun may be shining just a mile or two away in either direction.

The physical geography of the land and water is also important.

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5 0
2 years ago
Of the following chemicals, which is least likely to be biologically magnified as it moves through food webs?a.radioactive isoto
Arlecino [84]

Answer:

e.DDT

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4 0
3 years ago
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