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Some male birds and mammals congregate in communal courting grounds called leks.
(c) snow in Nunavut, alter the local albedo, causing altered microclimates. High albedos are found
The sparse plasma (blue) and dust (white) in the tail of comet Hale–Bopp are being
Snow Trillium
Cancer cells can move to new locations in the body, a process called metastasis
A lesion called a plaque in the brain of an individual with Alzheimer disease. A ring of degeneratin