Question

modeling the carbon cycle quick check
which process involves carbon moving directly from the biosphere into the geosphere? (1 point)
○ the photosynthesis of a plant
○ the eruption of a volcano
○ the weathering of rocks by a river
○ the decomposition of plants on the forest floor

Explanation:

• Plant photosynthesis moves carbon from the atmosphere to the biosphere, not the geosphere.
• Volcanic eruption moves carbon from the geosphere to the atmosphere, not the reverse.
• River rock weathering moves carbon from the geosphere to the hydrosphere/atmosphere.
• Decomposing forest floor plants (biosphere) release carbon that becomes part of soil and eventually geological deposits (geosphere).

Answer:

D. the decomposition of plants on the forest floor