Question

In which of the following spheres of Earth does diffusion of carbon dioxide from the hydrosphere occur?. . Atmosphere. . Biosphere. . Cryosphere. . Geosphere

Answer 1

atmosphere; cryosphere is irrelevant, the biosphere refers to the atmosphere, hydrosphere and geosphere,
-the geosphere is all solid rock
-the atmosphere is air, which is the only sphere the hydrosphere is in contact with and thus where the diffusion occurs