Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot.
Because the plant in the garden is receiving minerals form the spheres of earth and the plant in the pot is not
The respiratory and circulatory systems bring oxygen and nutrients to the cells. The respiratory and circulatory systems work together to maintain homeostasis. The respiratory system moves gases into and out of the blood.
Answer:
d their coats will become darker due to natural selection
Explanation:
Might be gene regulation, the process of turning genes on and off in normal development
