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Macromolecules › View

An animal that can keep its internal environment the same is called

A. Hyperstasis

B. Envirostasis

C. Reproduction

D. Homeostasis

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Anatomy & Physiology: Respiratory › View

Oxygen enters the blood at the lungs because

A. The partial pressure of oxygen is higher in the blood than in the alveoli.

B. The partial pressure of oxygen is lower in the blood than in the alveoli.

C. Oxygen is attracted to the negative charges of plasma proteins.

D. Low blood pressure does not oppose oxygen movement.

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