Siberian Huskies have two layers of fur. The outside layer is rough and coarse, while the inner layer is very dense and thick. Which theme of biology describes this phenomenon?

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Explanation:

The outside layer is rough and coarse, while the inner layer is very dense and thick. Which theme of biology describes this phenomenon? Evolution explains unity and diversity through adaptation.

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for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )