Answer:
Explanation:
1) Excitation brings about contraction.
2) Contraction leads to an increase in blood pressure.
3) Changes in blood pressure results in the opening and closing of the heart valves.
4) The opening and closing of heart valves then regulates the flow of blood and it's volume.
Is it plant fertilization of human fertilization?
That they both had nearly the same hypothesis
Prokaryotic cells get energy by utilize different sources of carbon compounds.
