Decomposition increases amount of organic matter in soil, and organic Matter Organic matter is the varied array of carbon-containing compounds in the soil. Given these facts, what increases the amount of carbon-containing compounds in the soil among the following options:
- nitrogen fixation
 - Greenhouse gasses
 - fossil fuels
 - chlorofluorocarbons
 - freezing
 - erosion
 - rainfall
 - decomposition


 

        decomposition 