Eventually, evolutionary diversification reverses this process beginning with the appearance of small simple morphotypes that give rise to successively more complex species and re-establishing stable high diversity faunal assemblages. Within this progressive mass extinction pattern, catastrophic events, or the attainment of threshold conditions, may hasten the demise of weakened species leading to patterns of abrupt or sometimes stepwise extinctions.
In conclusion, we can and must become a society that appreciates the importance of biodiversity and how to preserve it from extinction, not only for the flora and fauna that is at risk but for the well being of man kind as well.
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