Double circulation is found in __________________ and involves a heart with ____ chambers.

Double circulation is found in __________________ and involves a heart with ____ chambers.



a. Fish; 2
b. Amphibian; 3
c. Non-avian reptiles; 3
d. Birds and Mammals; 4
e. Both C & D
f. B, C, and D
g. All of these


Answer: f. B, C, and D


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