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FinnZ [79.3K]
3 years ago
9

Albert, a student researcher, varies the amount of food given to rats in an experiment to measure the effect on their learning b

ehavior. in albert's study, the amount of food given is the _____ variable.
Biology
1 answer:
Fynjy0 [20]3 years ago
6 0

Albert, a student researcher, varies the amount of food given to rats in an experiment to measure the effect on their learning behavior. In albert's study, the amount of food given is the independent variable.

An independent variable is under the control of the experimenter. Independent variable does not depend on the other variables involved in the experiment. Since the amount of food is varied, it is not depending on other variables like size of mice, weight, etc.

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The beginning of autumn in North America is in September, but the beginning of autumn in South America is in March. The diagram
ahrayia [7]

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5 0
3 years ago
Read 2 more answers
Blood pumps through arteries due to contraction of the arterial walls but flows more freely through veins because there is littl
eduard

Excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.

<h3>What are Excitable cells?</h3>

Excitable cells are defined as those cells that are capable of generating electrical impulses when stimulated. Example of such cells include:

  • Neurons,

  • muscle cells( smooth, skeletal and cardiac)

  • Endocrine cells.

The artery is made up of higher amount of smooth muscles than the veins therefore, excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.

Learn more about muscles here:

brainly.com/question/25778330

#SPJ1

8 0
2 years ago
give an example of a change that the ecosystem was not able to recover from and return to equilibrium.
ollegr [7]

Answer:

Forestal tiene una cierta capacidad de "cicatrizarse" para recuperarse. Esta resiliencia ecológica varía con el contexto biogeográfico e histórico. El oeste de Nueva Orleans, seis meses después del paso del huracán Katrina

Explanation:

7 0
3 years ago
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