Question

Question
Which earth sphere alters the composition of the atmosphere through photosynthesis?
Responses

hydrosphere
hydrosphere

biosphere
biosphere

cryosphere
cryosphere

crust
crust

Answer 1

The correct response is **biosphere**. The biosphere is the global sum of all ecosystems, where living organisms, particularly plants, alter the composition of the atmosphere through the process of photosynthesis, which produces oxygen and removes carbon dioxide.