Following its recommendations, almost all rich countries adopted a definition of death based on the extinction of activity in the brain, rather than in the heart or any other organ.

根据它的建议，几乎所有的富裕国家都接受了将死亡定义为大脑活动的消失，而非心脏或者其他器官活动的停止。

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After each extinction, a rich variety of ammonoid species and body plans was replaced by a few free-floating types.

在每次物种灭绝之中，大量的菊石和体平面为少量浮游动物所替代。

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