Carbon cycle

Question 1

Describe biogeochemical cycling

Answer 1

the natural course of how living things circulate with consideration of the biological, chemical and geological factors

Question 2

Step one

Answer 2

First enters atmosphere as carbon dioxide through respiration and combustion. Carbon dioxide is then absorbed by producers (i.e shrubs and trees) to make carbohydrates in photosynthesis.

Question 3

Step two

Answer 3

Food chain passes through carbon compounds as animals feed on plants, Most of the carbon consumed is exhaled as carbon dioxide, which is formed during respiration.

Question 4

Step 3

Answer 4

Animals and plants die - dead organisms eaten by decomposers (i.e. earthworms)- the carbon in their bodies replenished into atmosphere as CO2- the plant/animal remains may be available for combustion as fossil fuels in the future.