Question

Which of the following is NOT an important factor in determining the balance between carbon sequestration and the return of carbon to the atmosphere?

soil aggregation

the type of carbon fixation pathway associated with nitrification

microbial respiration and methanogenesis

soil mineral content

the microbial loop and viral shunt

Answer 1

Answer - Soil aggregation

Carbon sequestration is a  long-term storage of carbon dioxide or other forms of carbon  to either mitigate or defer global warming and avoid dangerous climate change . It has been proposed as a way to slow the atmospheric and marine accumulation of greenhouse gases, which are released by burning fossil fuels. Soil and crop management practices have a profound impact on carbon (C) sequestration , but the mechanisms of interaction between soil structure and soil organic C (SOC) dynamics are not well understood.The quality and quantity of plant residues define the amount of organic matter and thus the soil structure and soil organic C content.