B is not right
c or a,
a is not right
c is correct because they need each other to live
hope that helped :)
Answer:
B
Explanation:
Permeability is the property of a cell membrane that allows materials to pass through.
<span>He will experience a gradual drop in his testosterone levels as he ages. This will cause a lowered amount of energy and could cause a slight gain in weight. In addition, he may experience fatigue, a loss of body hair, and a general decrease in his strength.</span>
