Given the extraordinary diversity of life on the planet, there must be mechanisms for speciation: the formation of two species from one original species.

考虑到地球上的生命的非凡多样性，一定存在着形成物种的机制：从一个原始物种演变为两个物种。

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Around 95% of the islands' original species survive.

岛上大约95%的原始物种存活了下来。

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Those hybrids appeared better at surviving eutrophication and soon outnumbered the original species.

这些杂交品种在持续的超营养作用下生存的更好，且它们的数量很快超越了原始的品种。

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Rarely do they resemble their original species: they've been treated with radiation, doused with hormones, crossed and crossed again all so that they can be kept low and tight.

NPR: Excerpt: 'The American Meadow Garden'

This plummeted over 80% when the dam began operation, and a decade later, through extensive government investment to restock the river, the species number is still less than half the original amount.

CNN: STORY HIGHLIGHTS

Across a cluttered table at Lego's base in Billund an original Mindstorms robot faces the new crew like a last dinosaur eyeing frisky new species.

FORBES: Son of Lego