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.

it is a learned trait

explanation:

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.