More More Worms
Some parasitic round worms are...
hookworms enter through soles of feet, Trichina worms enter from undercook pork, Heart worms enter from bite of an infected mosquito
3 parasitic round worms
Hookworms, Trichina, and Heartworm
Segmented worms had a ______ circulatory system.
Obtain oxygen through _____ skin.