Answer:
It contains 2 or 3 ppm of oxygen concentration.
They will actually explode or burst
So What happens is the pure water outside has a high water potential while the cytoplasm inside the animal cell is a low water potential, water will diffuse down a water potential gradient through the semi-permeable membrane of the animal cell and cause the cell to swell (inflate like a fully-blown balloon), the result is that the delicate, elastic cell membrane<span> can't tolerate the internal pressure coming from the cytoplasm so it tears causing the cell to burst.</span><span>
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Due to Natural Selection, it is likely that the allelic frequency would change to favor iguanas with webbed feet. Those animals with webbed feet would have an easier time navigating their environment, which gives them an advantage over those that do not. Hope this helped!
Adipose tissue is your answer