标题: gwd24 first reading [打印本页] 作者: you5460 时间: 2005-5-25 20:19 标题: gwd24 first reading
"Another example of indirect negative
consequences occurred in England when a virus introduced to control
rabbits reduced the amount of open ground (because large rabbit
populations reduce the ground cover) ...."
Perhaps my brain is dead today, I read this sentence several times and still felt confused.
If a virus is introduced to control rabbits, then the rabbits is goint
to become samller in size, so the amount of open groupd shoud be
increased. Have I misunderstood this sentence?作者: you5460 时间: 2005-5-26 06:50
thanks !![em06]
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