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2009-08-04 09:45:00

What do the Gulf of Mexico's "dead zone," global climate change, and acid rain have in common? They're all a result of human impacts to Earth's biology, chemistry and geology, and the natural cycles that involve all three.


Word of the Day
onomatope
  • An imitative word; an onomatopoetic word.
The word 'onomatope' is a back-formation from 'onomatopoeia'.
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