Answer:
roundworms,tapeworms,and flatworm
Explanation:
cuz they cannot multiply in human body
<span>Im pretty sure the answer is B) Pupil, lens, retina, optic nerve
hope this helps :)</span>
Answer:
organisms that can't make their own food are known as heterotrophs
D. Lymph nodes are the filtering points throughout the body... found in the lymphatic system
