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Where does the biosphere exist?

A. From the deapest ocean, to high in the air

B. Only from the ocean to earth's surface

C. Only on top of earth's surface

D. Only from earth's surface to the tops of mountains

B. Only from the ocean to earth's surface

Explanation:

The biosphere is known as the layer of the Earth where life exists. It reaches a peak of ten kilometers above sea level, which is used by some birds in flight while the biosphere go to depths as low as 8 kilometers deep or the bottom of the ocean.

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hello there the answer is d

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation: