Question

How are the earth's principal biological systems being depleted​

Answer 1

Answer:

Explanation:

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Answer 2

Answer:

$\text \red { The earth's principal biological systems }$

$\text \orange { are being depleted by excessive use. Over }$

$\text \blue { fishing is quite common. Forests are being }$

$\text \pink { cut to obtain firewood for cooking. }$