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    • Join Date: Dec 2007
    • Posts: 160
    #1

    one question

    Hi!

    Life on earth ( ) the way it has without the protective effect of ozone.

    (a) would not evolve (b) would not have evolved
    (c) will not evolve (d) would not have had evolved


    Which is the best appropriate answer?
    I am confused by between (a) and (b).

    Thanks always!

  1. engee30's Avatar
    • Member Info
      • Native Language:
      • Polish
      • Home Country:
      • Poland
      • Current Location:
      • England

    • Join Date: Apr 2006
    • Posts: 2,969
    #2

    Smile Re: one question

    Quote Originally Posted by Grinkl View Post
    Hi!

    Life on earth ( ) the way it has without the protective effect of ozone.

    (a) would not evolve (b) would not have evolved
    (c) will not evolve (d) would not have had evolved


    Which is the best appropriate answer?
    I am confused by between (a) and (b).

    Thanks always!
    To me, the only correct answer is (b).


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