Is just a chemical reaction that compels animals to breed.

过是让动物繁衍后代化学反应罢了。

Has the earth ceased to yield its increase?

难道地球已再繁衍生息?

Also, the trait spreads only with each successive generation.

其次，性状只有在停繁衍下才会传播。

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己母语。

Those plants and animals that do survive usually reproduce very fast and in great numbers. The single-cell plant, the diatom, can multiply itself into a billion new diatoms in one month.

那些生存下来植物和动物通常重新繁衍更快和更多数量。单细胞植物，像硅藻，能在一个月己繁衍一百万新硅藻。

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

就像是个繁衍各种害虫封闭空间。

Conservation efforts are vital to ensuring that these animals survive to the next generation.

保护行动对于确保这些动物能繁衍到下一代至关重要。

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

但在没有飓风袭击地区，温和蜘蛛群繁衍后代数量更多。

Activists say every minute counts because at the current rate of poaching, the elephant, the living mammal to walk the earth in the wild could be extinct within a generation.

活动积极分子表示这需要分秒必争, 因为以目前偷猎速度来看, 大象这种在地上行走繁衍生息哺乳动物将会面临灭顶之灾。

For this particular colonies there's a real risk that the structure of the sea ice that they breed on will change.

对于这个特定聚居地来说，它们赖以繁衍海冰结构将会发生变化，这是一个真正风险。

On the surface live millions of people, and one of those people is you.

地表繁衍亿万生灵，其中就有小小你。

In addition to cutting our carbon emissions, we must find ways of using land and water that cause the least damage to the environment, leaving enough space for natural habitats to thrive.

除了减少碳排放，我们还必须找到正确使用土地和水资源方法，以尽量减少对环境破坏，从而留出足够空间让然栖息地繁衍生息。

It enables plant reproduction and helps sustain agricultural crops that produce fruit and nuts.

它帮助植物繁衍，滋养着各类果树与坚果树。

In order to mate again, he has to wait for all his eggs to hatch, so he sacrifices the slowpokes to free himself up for more baby-making.

为了可以再次交配，他必须去等待这些幼卵完成孵化，这样它就可以获得继续交配从而繁衍后代机会。

For these ones, it will even complicate our livelihood in the future, if they are going to stay and multiply here, or make here home, their home.

这些蝗虫，如果他们留在这里繁衍生息，或者在这里安家，将使我们未来生活更加困难。

Because they're still threatened by poachers, illegal hunters, dozens of these large animals have been flown to another African park, where it's hoped they'll reproduce and thrive for decades to come.

由于它们仍然面临偷猎者，就是非法捕猎者威胁，数十头这种大家伙已经被空运至另一个非洲国家公园，人们希望接下来数十年里，它们能在那里繁衍生息。

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来就在做事情，这种共享经验是每个人都有。

We've got to solve the puzzle of these sharks lives to make sure they flourish and make a difference for the future.

我们要弄清鲨鱼生活习性，确它们繁衍昌盛，改变它们未来。