Fact 1: Decomposition increases amount of organic matter in soil.

Fact 2: Organic matter is the plant and animal residue in the soil at various stages of decomposition.

Given the two facts above, answer the question "What increases the amount of plant and animal residue in soil?" with the following options: 
- Decomposition
 - Warm temperatures
 - fossil fuels
 - Pesticides
 - nutrients
 - evaporation
 - Wet weather
 - Living creatures


 

 Decomposition        