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Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
Platycnemididae are a family of damselfly called white-legged damselflies.
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
James A. Garfield lies mortally wounded. After failing to locate the bullet, surgeons called in Alex
The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
A nerve cell (neuron) has extensions called dendrites