Answer: C.
Explanation: The kidneys do not have an effect on the exchange of oxygen and carbon dioxide with the tissues, that is a function of the lungs.
Answer:
Yes
Explanation:
if you use the scientific method in that way then yes you can
Bacteria, but out of those three then it would be land, because animals (dinosaurs) Could not live without food (plants) and plants can't grow without land.
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