Free-living flat worms = carnivores or scavengers
Have digestive cavity, mouth, pharynx
Parasitic Flatworms: = Feed on blood, tissue fluids, or pieces of cells from within a host
ITS NOT EVEN A DOCTOR NOR A ENGINEER IT JUST DID WHAT IT WAS COMMANDED TO DO
1. when a earth worm eat it deposits nutrient by pooping
2. earth worm, feed grass, feed cow, human eat cow
B. tears , this is not a first line of defense
