The brain send signals that control the speed at which food moves through the digestive system. What systems are involved? A. Circulatory, Immune, digestive
B. Muscular, Digestive, Immune
C. Digestive, Muscular, Nervous
D. Respiratory, Endocrine, Digestive

How does the molecular clock work? a. it analyzes the brain functionality of two different species.b. it examines and compares the physical characteristics of two different species.c. it illustrates relationships between two different species.d. it compares the number of mutations that exist in the dna of two different species.

What are the possible blood types among the children of parents that are ab and ii? oa) types a and b ob) types a, b, and ab c) types a, b, and o od) types a, b, ab, and o

Kudzu vines grow by climbing and wrapping around trees. trees covered by kudzu can die because they are starved of sunlight. what type of relationship exists between the trees and the kudzu growing on them?