Question

Explain carbon cycle using four important processes such as photosynthesis, respiration, decomposition and combustion

Answer 1

Carbon is one of the most prevalent elements which constitute all forms of life on Earth. Like water, carbon undergoes a natural cycle of formation and disintegration. It shows how carbon atoms are capable of existing in different compounds in different phases of time.

Step 1 :- Carbon enters the atmosphere in the form of carbon dioxide (gaseous state), due to respiration (from microorganisms and other lifeforms) and combustion.

Step 2 :- Carbon dioxide is absorbed by plants to manufacture glucose (which consists of 6 carbon atoms) with the help of photosynthesis.

Step 3 :- Animals consume these plants, thus the carbon compounds in the latter pass along the food chain. Most of the carbon they consume is exhaled as carbon dioxide that was formed during aerobic respiration. The animals and plants eventually die.

Step 4 :- In case of dead plants, decomposers break them down. This leads to the return of carbon to the atmosphere, as the decomposers now carry it within their bodies and exhale it. If decomposition does not occur, the plant and animal material eventually transform into fossils over a span of centuries.

Answer 2

Answerhh:

Explanation: