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The Australian 20 cent coin features a platypus.
During drought years on the Galapagos, small, easily eaten seeds become rare, le
Primary aging means changes in hair color and skin texture for almost everyone.
In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th
“Career choice” for many women means leaving their paid jobs for a number of years when they ...
A pedigree for a rare autosomal recessive trait. In these pedigrees, most affected individuals have