How does the respiratory system interact with the circulatory system?
A.
The circulatory system removes oxygen from the body to make room for carbon dioxide in the respiratory system.
B.
The respiratory system brings in carbon dioxide so the circulatory system can transport it throughout the body.
C.
The respiratory system transports oxygen to the heart for the circulatory system.
D.
The circulatory system transports oxygen that the respiratory system brings into the body.

D. The circulatory system transports oxygen that the respiratory system brings into the body.

Explanation:

the first two answers either refer to carbon dioxide as beneficial and necessary to the body(it sometimes is but not in this case)

the answer choice c refers to oxygen being transferred directly to the heart. This is also incorrect.

the only proper answer to this question is answer choice d.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).