Answer:
A.
Explanation:
The key here is that it has not been researched. If it were to be fully evidence-based science, it would be fully researched.
Dissolves into the tissue of the organs.
Answer: Y: Cardiac output; Z: A phase in which in which the heart contracts
Explanation: this has to do with cardiovascular system heart rate is where how many beats heart is beating per second and your intensity. if the blood is being pumped then is contracting in order for your hearts blood to be pushing thru. it must contract for the blood to pump in one minute
hope this helps a lot!!!!!
