Carbon Cycle

Question 1

Carbon cycle

Answer 1

1) Carbon is stored in air, plants and other living things
2) Photosynthesis removes CO2 from the atmosphere
3) Animals eat plants and respire, releasing CO2
4) Plants and animals die. Some get decomposed, decomposes respire releasing CO2. Some may fossilise and if burned release CO2

Question 2

Clean air indicator species

Answer 2

-lichen

Question 3

Polluted air indicator species

Answer 3

-black spot fungus