How does blood enter the heart?
A) as paracardial fluid
B) through the pulmonary arteries
C) from the aorta
D) by means of the capillaries surrounding the heart
E) via the vena cava
Answer: E
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A. enhance; increase B. reduce; increase C. maintain; decrease D. enhance; maintain E. reduce; decrease
True or false: Competition can only occur between members of the same species
A. true B. false
Ranking questions: Put the steps in the correct order for a birder hearing the call of a whip-poor-will.
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