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Vera_Pavlovna [14]
3 years ago
15

In north america, the main sources of protein are ________.

Biology
1 answer:
Lelu [443]3 years ago
5 0
Rice beans, meat, pasta, corn
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Experimental setup

setup that is testing a hypothesis using a variable. In most cases only one variable should be tested at a time.

Control Setup

setup that is identical to the experimental setup, only it does not contain a variable.

Independent Variable

The one factor that is change by the person doing the experiment

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Constant

all the factor that stay the same in an experiment.

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Which level of organization is best represented by the liver?
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