Word: zonal
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Dates: during 2000-2009
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...terms of millions of years. Humans may be the most successful species on the planet after the insects, Erwin says, but we have triggered a global species extinction that rivals those caused by ice ages, floods and killer asteroids--with a difference. "Those extinctions were more or less local, zonal or regional," says Erwin. "The present trend, the so-called sixth massive extinction process, is worldwide and atmospheric, totally pervasive...