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Cnidarians have specialized stinging cells called cnidocytes
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism
Herbert Spencer (1820–1903), sometimes called the second founder of sociology, coined the term ...
Snap-ring pliers are also called lock-ring pliers, and they are designed to remove internal and ...
A nerve cell (neuron) has extensions called dendrites