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.
Answer:
F
Explanation:
Some plants follow C3 pathway while some follow C4 pathway
Answer:
usca en internet bzov urabas
Explanation:
Answer:
because they need foodi think