Answer:
it's necessary because your body uses water in all its cells organs and tissue. water helps you to keep moving and functioning.
I think that b is the correct
Answer:
2.1 located between the left atrium and the left ventricle (left atrioventricular orifice).
2.2 it helps to prevent blood from flowing backward as it moves through the heart.
Answer:
It would be 100% purple flowers because 4 quarters equals 1.00 and it would be 50% white flowers because 2 quarters equals 50
