The Indies by sailing west across the Atlantic Ocean.
Answer:
enzyme activity be affected by a variety of factors such as temperature,pH, concentration
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.
Pituitary gland ( insufficient production of STH )
