13. Outline salient features of carbon cycling in an ecosystem.
Salient features of carbon cycling are as follows
1. Carbon cycling occurs through atmosphere, ocean and through the living and dead organisms.
2. Most of the carbon is fixed by plants during the process of photosynthesis and returns to the atmosphere in the form of CO2 during respiration.
3. Burning of wood, forest fire and combustion of organic matter, fossil fuel, and volcanic activity are some other sources of releasing CO2 in the atmosphere.
An outline of C-cycle is depicted in the figure given below: