Is just a chemical reaction that compels animals to breed.

不过是让动物繁衍后代的化学反应罢了。

Has the earth ceased to yield its increase?

难道地球已不再繁衍生息?

As fauna and flora flourish, Earth's climate slowly recovers from millennia of human impact.

随着动植物的繁衍，地球的气候逐渐从人类数千年的影响中恢复过。

Also, the trait spreads only with each successive generation.

其次，性状只有在不停繁衍下才会传播。

Those at Woburn Abbey, in England, prospered.

那些在英格兰沃本修道院的不断繁衍。

Within a few generations most had forgotten their native tongues.

他们繁衍几代之后，大部分人就已经忘记了自己的母语。

It's like a gated community for vermin of every sort.

就像是个繁衍各的封闭空间。

And when they arrive, they often thrive.

并且当它们到达时，它们就会繁衍。

But in hurricane-free areas, docile colonies had more babies.

但在没有遭遇飓风袭击的地区，温和蜘蛛群繁衍的后代数量更多。

These leviathans are making a journey to nesting sites they've used for generations.

这些庞然大物正在前往它们世代繁衍的筑巢之地。

Nature is tricking us into procreating, and the loving fusion we seek is consummated in our children.

我们的本性在 诱使着我们繁衍后代，我们所寻找的爱的融合 结生出我们的儿女。

If you leave them alone, they can grow to 195,000 elephants.

如果不加以干涉，可以繁衍至 195000 头大象。

And our money will come in to look after these elephants in perpetuity.

我们的钱能让大象得以世世代代繁衍生息。

The National Audubon Society says that 60 percent of Atlantic puffins breed there.

国家奥杜邦协会表示，60%的大西洋海鹦在冰岛繁衍。

Beaver thrived in the United States and Canada for centuries.

海狸在美国和加拿大繁衍了好几个世纪。

People have been doing this forever, and it's this shared experience that everyone has.

繁衍后代是人类诞生以就在做的事情，这共享的经验是每个人都有的。

In their modern form, coral reefs have thrived on Earth for over 50 million years.

以现代形式存在的珊瑚礁在地球上已经繁衍了超过 5000 万年。

You survive and reproduce, and pass that trait on to some of your offspring.

你存活下，繁衍后代，并将这特质遗传给你的后代。

Cockroaches are able to thrive even in nutrient-poor environments.

蟑螂可以在营养贫乏的环境下繁衍生息。

Yeah, they breed and they nest on the ground.

对，鸮鹦鹉在地上繁衍、建巢。