Ecology and the environment - Cycles within ecosystems

Question 1

Explain the carbon cycle

Answer 1

Carbon enters the atmosphere through respiration, decomposition (animals or decomposers) and combustion (fossil fuels, wood)

It is then turned back into Oxygen by plant taking part in photosynthesis and the cycle repeats

Question 2

describe the stages in the nitrogen cycle(specific names of bacteria are not required)

Answer 2

https://igcse-biology-2017.blogspot.com/2017/06/411b-describe-stages-in-nitrogen-cycle.html