Fact 1: Bivalves feed on plankton and nonliving organic matter.

Fact 2: Mussels are bivalve mollusks.

Given the two facts above, answer the question "What feeds on nonliving organic matter?" with the following options: 
- rabbit
 - crocodiles
 - mussels
 - oxygen
 - skateboard
 - barnacles
 - trucks
 - fungi


 

   mussels      