The diagram shown below is a simplified version of the carbon cycle.

a. Name the processes A, B, C and D.

b. Write balanced chemical equations to represent the processes taking place in A and B.

c. There are a number of fuels which could be placed in the ‘fuels’ box. Name three such fuels.

d. ‘The air contains approximately 0.03% of carbon dioxide and this amount is almost constant.’ Explain why this is a true statement.

e. (i) What is the ‘greenhouse effect’?
(ii) Discuss the possible consequences of the greenhouse effect if nothing is done to counteract it.

Transcribed Image Text:

carbon dioxide in the air A B D animals eat carbon plants carbon compounds in animals compounds in plants fuels