So far, global warming has been documented to be causing __________.

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    melting of ice sheets and retreat of glaciers at unprecedented rates
    shifts in the timing of spring events, which are occurring much earlier than previously
    shifts in the distribution and abundance of a number of plant and animal species
    changes in precipitation patterns on land, with some areas subjected to more severe and frequent droughts, and other areas more frequent and severe floods
    all of the above
    None of the above. To date, global warming has had no effects on any of the things mentioned above.

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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all of the above
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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