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Some male birds and mammals congregate in communal courting grounds called leks.
Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
tongue states
Tongue Anatomy
Number of positive, negative, and neutral images recalled by younger, middle-age, and older adults. ...
Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ...