Why does organic decomposition slow down in cold climate?

Correct answer: Because microbial activity decreases

In low temperatures, the metabolic and enzymatic activities of microorganisms such as bacteria and fungi decline. These organisms break down dead plant and animal remains, so reduced microbial activity slows organic decomposition. Leaching removes nutrients, but it is not the main reason for slow decomposition in a cold climate. Exam tip: a fall in temperature generally reduces the rate of microbial decomposition.