You are presented with the question "What can help increase the amount of organic matter in soil? " and the following answer choices: 
- Fungi
 - mussels
 - pine
 - worms
 - animals
 - Enzymes
 - solutes
 - trees

Now knowing that decomposition increases amount of organic matter in soil and fungi are involved in decomposition, as well, choose the best answer.


 

 Fungi        