I believe the answer is delta.
Answer:
atrium.
Explanation:
because mommy told me so.......
Answer:
Blood is stored within blood vessels in a closed circulatory system, which circulates unidirectionally (in one direction) from the heart around the systemic circulatory route until returning to the heart.
Explanation:
Answer:
They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick.
Hope this helps!
c to maintain homeostasis
It is c because it wants to regulate the amount of water in it's system