Question

without this sphere, life on earth wouldnt be possible. the exchange of gases in this layer surrounding the planet is vital to every organism. what is this sphere called? a. biosphere b. geosphere c. atmosphere d. cryosphere

Explanation:

The biosphere encompasses all living organisms on Earth and their interactions with the environment. Gas - exchange is crucial for life, and without the biosphere, life on Earth would not be possible as it is the sphere where living things exist and interact.

Answer:

A. Biosphere