森林让濒临灭绝的生物存活下去。
无论如何，尽管恐龙没有留下可用的DNA，其他更晚灭绝的生物却更加慷慨。
In any case, though dinosaurs have left no usable DNA, other more recently departed creatures have been more generous.
到1885年它们在英国已被列为灭绝的生物，但19世纪50年代又有80只繁殖出的雄鸟归来。
They were judged extinct in the UK by 1885 but then made a comeback so that by the 1950s there were some 80 booming males.
如果你还觉得人类只能通过《侏罗纪公园》和博物馆里重建的巨大骨架来和已经灭绝的生物亲密接触，那你就落伍啦。
If you thought "Jurassic Park" and the large, reconstructed skeletons seen in museums were the closest we'd ever come to seeing extinct creatures come to life, you might want to think again.
我的处境很象一个生物学家，根据一根骨骼不仅要重新塑造出一个早已灭绝的生物的外貌，还要推测出它的生活习惯。
I am in the position of a biologist who from a single bone must reconstruct not only the appearance of an extinct animal, but its habits.
自然保护区是保护自然资源环境、拯救濒于灭绝的生物物种、进行科学研究的重要基地，它对人类社会具有重要意义。
Nature Reserve is to protect the natural resources and the environment, save endangered species, an important base for scientific research; it has important significance of human society.
古生物学专业研究化石和学习已灭绝的生物物种。课程包括化石的形成和化学，植物化石，实地和实验室的研究方法等。
Paleontology majors study fossils and learn about extinct life forms. Topics of study include fossil formation and chemistry, fossil plants, methods of research in the field and lab, and more.
为了保护那些濒临灭绝的生物，旺奇公园的首席督导员拥有准司法权利。他可以对偷猎者定罪，并对其实行最高达15年的监禁。
To protect the endangered creatures, the chief warden at Chitwan has quasi-judicial powers, including the authority to convict and jail alleged poachers for up to 15 years.
科学家们曾经相信那个时代的火星湖泊中只有冰，所以这个发现拓宽了那个时代，可能一些现在已经灭绝的生物在那个时代生活在火星上。
Scientists have previously believed that the lakes on Mars during that period were merely ice so the findings widen the period of time in which now extinct life forms could have existed on Mars.
The sea creatures, somehow restored to life in a theme park, hint at a future where cloning makes re-creating extinct animals possible.
今天，我们正在见证第六次物种大灭绝，但与其它几次不同的是，目前生物多样性的丧失可以追溯到人类活动。
Today we are witnessing a sixth mass extinction, but unlike the others, the current loss of bio-diversity can be traced to human activity.
当一个物种灭绝时，它会极大地改变生物多样性的状况。
When a species goes extinct, it dramatically changes the landscape of biodiversity.
大多数古老的生物几乎都灭绝了，但也有一些生命力顽强的物种存活了下来。
Most of the older organisms were nearly wiped out, although a few hardy species survived.
例如，彼得·谢尔登对于三叶虫的研究，那是一种已灭绝的身体分节的海洋生物，他的研究让我们得以一窥三百万年以来一个海洋环境的进化过程。
For example, Peter Sheldon' s studies of trilobites, a now extinct marine animal with a segmented body, offer a detailed glimpse into three million years of evolution in one marine environment.
俄罗斯生物学家G. F.Gause在试验室进行了大量的两个物种的实验，试验中，当只有单一的资源时，其中一个物种将会灭绝。
The Russian biologist G. F. Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.
英国的一项报告表明该国大多数濒临灭绝的野生物种，从红松鼠到当地小龙虾，正在以惊人的速度消失。
Some of Britain's most endangered wildlife, from red squirrels to native crayfish, are vanishing from the countryside at an alarming rate, a report warns.
无数生物物种的灭绝引起了人们的深切关注，使人们认识到保护濒临灭绝的珍稀动植物的特殊重要性。
The extinction of myriad biological species aroused deep concern which led people to an understanding of the special importance of protecting rare animals and plants on the brink of extinction.
这是一个非常特殊的地方，有很多濒临灭绝的物种，而由于它位于海洋生物中心的偏远角落，所以经常被忽视。
This is very special and has a large number of endangered species, and as it's at the far corner of the Sea Life Centre, it often gets overlooked.
虽然在地质记录中有十几次甚至更多的大灭绝，但白垩纪的大灭绝总是引起古生物学家的兴趣，因为它标志着恐龙时代的结束。
While there are a dozen or more mass extinctions in the geological record, the Cretaceous mass extinction has always intrigued paleontologists because it marks the end of the age of the dinosaurs.
作为海洋中最大的生物，蓝鲸很难追踪，但由于商业捕鲸，它们几乎灭绝，现在已被列为濒危物种。
It is hard to track the blue whale, the ocean's largest creature, which has almost been killed off by commercial whaling and is now listed as an endangered species.
从化石记录中可以了解到一些已经灭绝、但已经完全变成海洋生物的鲸目动物。
Extinct but already fully marine cetaceans are known from the fossil record.
我们不仅使生物大规模灭绝，还令陆地、空气和海洋含有巨大毒性，从而使生物的生存条件遭到破坏。
Not only are we bring about the extinction of life on a vast scale, we are also making the land, the air and the sea so toxic that the very conditions of life are being destroyed.
我们不仅使生物大规模灭绝，还令陆地、空气和海洋含有巨大毒性，从而使生物的生存条件遭到破坏。
Not only are we bringing about the extinction of life on a vast scale, we are also making the land and the air and the sea so toxic that the very conditions of life are being destroyed.
在大规模灭绝之前，高等海洋肉食生物是远古的鲨鱼。
Before the mass extinction, the top ocean predators were primitive sharks.
一些科学家认为过去大量海洋生物的灭绝，将引起数百万年后地球碳循环上下幅度变大。
Some scientists think that massive ocean extinction events in the past caused Earth's carbon cycle to fluctuate wildly for millions of years afterwards.
英国的一项报告表明该国大多数濒临灭绝的野生物种——从红松鼠到当地小龙虾——正在以惊人的速度消失。
Some of Britain's most endangered wildlife - from red squirrels to native crayfish - are vanishing from the countryside at an alarming rate, a report warns.
短期来看，这种强化生物灭绝危机感的做法，帮助了环保主义者。
In the short term, this strategy helps conservationists by intensifying the perceived threat of extinction.
没什么用处或者适应能力差的生物遭受冷遇：灭绝率远高于正常地质时期的时候。
Creatures less useful or adaptable get short shrift: the extinction rate is running far higher than during normal geological periods.
没什么用处或者适应能力差的生物遭受冷遇：灭绝率远高于正常地质时期的时候。
Creatures less useful or adaptable get short shrift: the extinction rate is running far higher than during normal geological periods.
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