Page 85 - Science Course 2 (Book 2)

Mo10-L2a: What is the Carbon Cycle?

Carbon in the form of CO2 leaves the atmosphere Key Concept
and enters the biosphere during photosynthesis.
What is the Carbon Cycle?

How do Earth systems interact in the carbon
cycle?

Carbon leaves the biosphere through the cellular
respiration of organisms.
When organisms die and decay, carbon moves from
the biosphere to the geosphere.

Carbon leaves the hydrosphere and enters the
geosphere when sedimentary rocks form on the
ocean f oor.

As carbon moves through Earth systems, the total
amount of carbon in the carbon cycle remains about
the same.

Atmospheric carbon dioxide, water and sunlight

Carbon released Converted into
back in to the new plant
atmosphere material through
photosynthesis

Which is harvested and burnt
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