A.) Veins in the pulmonary circuit carry oxygen-rich blood
red blood cells are used to circulate oxygen through out the body, thus it is true.
Ur answer is number 2 i'm almost sure of i
Answer:
C. Releases hormones to regulate the endocrine system
Explanation:
3)false
4)blood pressure
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D. A change in the amount of polar ice will alter how ocean currents move
