The anatomy of the homo sapiens is one feature that distinguishes them from its predecessors. Their anatomy was unique: changes in the skull and postcranial skeleton (skeleton minus skull), changes in brain size and architecture. The brain of the homo sapiens was larger than the brain in its predecessors. These changes are linked to the behavior of the homo sapiens and their adaptation.
D.
A fixed allele is homozygous within a population so D should be the correct answer.
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Answer:
Spread
Explanation:
People use envelopes very often. The germs people carry are put into the envelope and then it's sent out to many others.
