B is prey predator
C is parasitism
A is commensalism
Agriculture= Crops that are disease resistant, stay fresh longer, insect resistant and higher number of crops
I'm gonna say A. Lungs, heart, and brain pumps all the blood through your system. Or B.
Answer:
Invertebrates include all animals that lack a backbone, or a vertebral column. All chordites exhibit four characteristics during at least one stage of life: a dorsal, hollow nerve chord; a notochord; a tail that extends beyond the anus; and pharyngeal pouches.