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Cnidarians have specialized stinging cells called cnidocytes
Some male birds and mammals congregate in communal courting grounds called leks.
The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
The illusory bands visible in this figure are often called Mach bands, although Mach used a ...
As the world’s population continues to grow, demands on limited resources for food production
A thin cleft, called the synapse, separates one cell from another.