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Five hundred million different species

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by sahilchaudhary » Wed Sep 11, 2013 12:33 am
Thanks for all the help by the experts and other members...
Excellent explanation.
Sahil Chaudhary
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by Java_85 » Wed Sep 11, 2013 7:39 am
IMO B it is, I was between B and E, but tenses in B make more sense than E.
appeared rather than have appeared!
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