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Why Are Gills Only Found in Aquatic Animals

Question 16

Multiple Choice

Why are gills only found in aquatic animals?


A) There isn't enough oxygen in air for them to absorb
B) Gasses can only diffuse in water
C) Capillaries can only exchange gas with alveoli, not gills
D) They dry up when exposed to air
E) Aquatic animals do not transport oxygen on red blood cells

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