Bivalves feed on plankton and nonliving organic matter.
Mussels are bivalve mollusks.
Mussels feed on nonliving organic matter.
What feeds on nonliving organic matter?
Options:
[1] rabbit
[2] crocodiles
[3] mussels
[4] oxygen
[5] skateboard
[6] barnacles
[7] trucks
[8] fungi