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Why marine fish don't go into the deeper blue

(Phys.org) —Fish appear to be absent from the ocean's greatest depths, the trenches from 8,400 to 11,000 m. A team told Proceedings of the National Academy of Sciences about this in a study titled "Marin ...

dateMar 05, 2014 in Ecology report
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Progeny of old parents have fewer offspring

Reproduction at old age involves risks that may impact one's own life and may impose reduced biological fitness on the offspring. Such evidence, previously obtained in humans and other taxa under laboratory ...

dateMar 09, 2015 in Evolution
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