Carbon Cycle

Question 1

What can farmers do to increase carbon storage

Answer 1

- Plant more trees:
As trees would use the carbon created by farmers.
- Incorporate stubble:
As burning creates more carbon
- Keep organic matter in the soil:

• Grow a green manure crop:

Question 2

Draw a carbon cycle

Answer 2

1. Carbon enters the atmosphere as carbon dioxide from respiration and combustion.
2. Carbon dioxide is absorbed by producers to make carbohydrates in photosynthesis.
3. Animals feed on the plant passing the carbon compounds along the food chain. Most of the carbon they consume is exhaled as carbon dioxide formed during respiration. The animals and plants eventually die.
4. The dead organisms are eaten by decomposers and the carbon in their bodies is returned to the atmosphere as carbon dioxide. In some conditions decomposition is blocked. The plant and animal material may then be available as fossil fuel in the future for combustion.