Lungs are a more efficient method of respiration than gills.
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Q31: Crosscurrent flow is more efficient than countercurrent
Q33: Fish move water in only one direction
Q34: What is the function of the epiglottis?
A)To
Q35: The _,which acts as a brake on
Q36: In which animal is a countercurrent flow
Q37: The _ is a tumor suppressor,inspecting DNA
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