Carbon Cycle

Question 1

Decomposition

Answer 1

This process releases the nutrients back into the soil.
Bacteria and fungi are responsible on dead plant and animal material as well as egestion or excretion.
Break down large organic compounds to small organic compounds

Question 2

Humus

Answer 2

Is the organic material formed from the decomposing plant and animal remains.

Question 3

Photosynthesis

Answer 3

Only process to change CO2 from the air into a carbon compound found in plant tissues. Animals get these compounds by eating plants or eating animals that have eaten plants.

Question 4

Respiration

Answer 4

A reaction which releases carbon dioxide to make energy. This happens in all living cells and also bacterial cells when they decompose.

Question 5

Combustion

Answer 5

Carbon dioxide is released when fossil fuels are burnt in a process called combustion.

Question 6

Fossilisation

Answer 6

Pressure and heat change dead plant and animals into coal