Answer:
The sun
Explanation:
The is because the sun is the souce of energy
<span>The answer is a certain required chemicals must be actively
transported. Blood brain barrier is a
selective membrane that separates blood circulating from the brain and the
fluid of extracellular in the central nervous system. This is also called a
filtering mechanism, the capillaries that carry blood to the brain and spinal
cord tissue blocking the path way of the certain substance.</span>
The scenario listed that could be a mutation that causes members of a population to die out would be the genetic
The answer is true. You’re welcome
