Question

write the role of decomposition in carbon cycle

Answer 1

In the carbon cycle, decomposers break down dead material from plants and other organisms and release carbon dioxide into the atmosphere, where it's available to plants for photosynthesis. ... After death, decomposition releases carbon into the air, soil and water.

Answer 2

Soil decomposition is an important ecosystem process that influences the productivity and health of the plants that grow there. Decomposers ingest dead organic matter and break it down into its most basic elements: carbon dioxide, water, and nutrients.

• Organic matter consists of material or molecules produced by living organisms.
• Large amounts of important nutrients are released into the soil solution during decomposition, making them available to plant roots.
• Decomposition is also significant because it contributes to the global carbon cycle.
• The carbon cycle refers to the periodic flow of carbon atoms from the atmosphere to the lithosphere and back to the atmosphere. 
• Carbon is present in the atmosphere as carbon dioxide gas. Some of the carbon is transformed into organic carbon, which is what makes up organic matter or biomass, through the process of photosynthesis. Cellular respiration occurs in plants and animals, which converts a small percentage of organic carbon back to CO2.
• When plants shed their leaves or die, a greater part of their organic carbon is released into the soil.
• After that, decomposers get to work breaking down the organic stuff.
• Some of the organic carbon in organic matter is transformed to CO2, which is released into the soil pore spaces, resulting in CO2 concentrations that are relatively high compared to the atmosphere.
• CO2 diffuses from the soil to the atmosphere due to the concentration difference.
• CO2 emission refers to the movement or flux of CO2.