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(a) Poisonous Allerian (a stinging bee), and (b) nonpoisonous Batesian (a non-stinging hover
Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i
In this painting evangelist George Whitefield appears to be cross-eyed. This is no fault of John Wol
People whose behaviors violate norms are often called mentally ill. “Why else would they do such ...
A commercially available DNA microarray, called a GeneChip, marketed by Affymetrix, Inc
In amphibians, lizards, snakes, and turtles, the heart has three chambers: two atria and one ventric