The answer is The Nervous System.
It interacts with all the other systems, it tells them what to do.
Hope it helps!
All the cells in a person's body have the same DNA and the same genes. However, the difference between cells in different tissues and organs is that the "expression" of the genes differs between cells. Expression means that the message from the DNA is being copied and made into protein.
Im not sure but i believe it could be C
Since bees and butterflies both pollen are flowers, the growth (population) of flowering plants would become less common without the pollen being spread.
