Fast carbon cycle

Question 1

What are the 5 key processes in the fast carbon cycle?

Answer 1

-photosynthesis, respiration, digestion, decomposition, combustion

Question 2

Outline photosynthesis

Answer 2

-the absorption of co2 from the atmosphere and from oceans to produce organic carbon structures

Question 3

Outline respiration

Answer 3

-The release of CO2 into the atmosphere, soil and oceans by animals as they exhale.

Question 4

Outline digestion

Answer 4

-The release of carbon compounds by terrestrial and marine animals after feeding on carbon-rich material

Question 5

Outline decomposition

Answer 5

-The breakdown of animals and plant structures by bacteria and the release of carbon compounds into the atmosphere, soil and ocean floor.

Question 6

Outline combustion

Answer 6

-Natural fires release carbon compounds from vegetation to then atmosphere

Question 7

Point to support decomposition?

Answer 7

-deforestation in Bourneo, lost around 70% of its forest cover since 1950.
-75% of earth’s land surface has been altered due to human activity
-deforestation 13Mha a year on average