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vodomira [7]
3 years ago
10

How was the clean air act of 1970 different from previous legislation aimed at reducing pollution?

Biology
1 answer:
Ede4ka [16]3 years ago
8 0

Answer: B

Explanation:

I just did it

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what cellular mechanisms allow human body cells to maintain these concentrations ?
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Active transport: movement against a gradient To move substances against a concentration or electrochemical gradient, a cell must use energy. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the proper concentrations of ions and molecules in living cells.
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Which of the following describes how the body uses molecules like the one illustrated above?
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B

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2 years ago
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