The arrows usually point to the organisms that are doing the eating.
Explanation:
For that reason, we can say that the arrows represent the flow or transfer of energy in an ecosystem. It also specifies the direction of the flow of energy.
Answer:
Blood carries the oxygen through out the body and gets re-oxygenated to keep the body going.
Explanation:
Just trust me.
Metabolism: all chemical reactions within a cell
A sonar is an underwater sound detecting system.
Answer:
Well...
Explanation:First of all skin color is determined by how much melanin you have and the one thing that would show more variability in the human population is probably the one that uses less genes, because of how we come from only two genes which makes us different.
