Why were physical activity and caffeine and alcohol intake the controlled variables?

1 answer:

4 0

Controlled variable is a variable that was made constant in the research. That was because the controlled variables can influence the dependent or independent variable. If the variables is not made constant, it can alter the research result and made it invalid.

In this case, the caffeine and alcohol intake might alter the physical activity or the blood glucose so it should be controlled.

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Answer:

Explanation:

Local health department links up patient with adequate health care needed especially area where good health facilities is reduces and cannot be access, they prevent spread of disease by given immunizations.

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Answer:

The statement that says "Energy enters a food chain as heat energy and leaves it as light energy" is false.

Explanation:

The energy that enters the food chains, first of all, is light energy from the sun. This energy is assimilated by plants to convert it into chemical energy, through photosynthesis.

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The true statement is "Energy enters a food chain as light energy and leaves it as heath energy".

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2 years ago

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Explanation:

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Answer:

Explanation:

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