The list of endangered species includes nearly 600 fishes.
濒临灭绝物种的名单中列有将近600种鱼。
Many of these species have vanished or are facing extinction.
这些物种中的许多已经消亡或是正濒临灭绝。
The Wilderness Society lobbied Congress to authorize the Endangered Species Act.
荒野协会游说国会批准《濒危物种法》。
That's what a keystone species does in an ecosystem.
那就是拱顶石物种在生态系统中的作用。
There are 200 species of birds in Romania's wetlands.
在罗马尼亚的湿地中有200种鸟类。
The species showed no significant decline in fecundity.
该物种的繁殖力没有明显下降。
These species have distinctive visual centers and big eyes.
这些物种都有独特的视觉中心，眼睛很大。
When sea stars are removed, species diversity falls sharply.
海星消失后，物种多样性急剧下降。
The author does imply this by talking about unknown species.
作者确实通过谈论未知物种暗示了这一点。
Distinctions between exotic and native species are artificial.
外来物种和本地物种的区分是人为的。
Some species of tuna have specialized grooves in their tongue.
有些品种的金枪鱼的舌头上有专门的凹槽。
Hundreds of tree species face extinction because of deforestation.
由于森林砍伐，很多树种濒临灭绝。
Most invertebrate species disappeared during a wave of extinctions.
大多数无脊椎动物在一次（物种）灭绝浪潮中消失了。
At this point the subpopulations have evolved into distinct species.
这时，亚种群已经进化成不同的物种。
Competition among species is of considerable evolutionary importance.
物种间的竞争在进化上具有相当重要的意义。
Somewhat later, the migrants returned, bringing new species with them.
不久之后，移民回来了，还带来了新的物种。
Although diet varies from species to species, many primates are largely vegetarian.
虽然不同物种的饮食不同，但许多灵长类动物基本上都是素食者。
As you know the evolution of any species is largely influenced by its interactions with other species.
正如你所知道的，任何物种的进化在很大程度上都受到它与其他物种相互作用的影响。
If it were dropped from the Endangered Species List, the bald eagle would still be a threatened species.
如果秃鹰从濒危物种名单上除名，它仍然是一个受到威胁的物种。
Surprisingly few extinctions of indigenous species can be attributed to competition from introduced species.
令人惊讶的是，本土物种的灭绝很少归因于外来物种的竞争。
The biggest was the Endangered Species Act of 1973, which protects imperiled animal species from extinction.
其中最著名的是1973年的《濒危物种法案》，该法案旨在保护濒临灭绝的动物物种。
Of the 7,000 alien species in the United States—out of a total of 150,000 species—only about 10 percent are invasive.
在美国总共15万的物种中，有7000种外来物种，当中只有10%是入侵物种。
A symbiotic relationship is an interaction between two or more species in which one species lives in or on another species.
共生关系是两个或多个物种之间的相互作用，其中一个物种生活在另一个物种体内，或依靠这一物种生活。
Meteorite impacts can be advantageous for some species, which thrive, and disastrous for other species, which become extinct.
陨石的撞击对某些物种是有利的，它们会茁壮成长；而对其他物种则是灾难性的，它们会灭绝。
Biologists can infer how species are related evolutionarily by comparing DNA sequences for the same genes in different species.
生物学家可以通过比较不同物种中相同基因的DNA序列来推断物种之间的进化关系。
Some endemic Philippine species use disturbed habitat as extensively as non-endemic species that are widespread in Southeast Asia.
一些菲律宾特有的物种与东南亚普遍存在的非特有物种一样广泛地使用受到干扰的栖息地。
These fast-growing species can grow over the slower-growing species of coral, denying them light and preventing them from recovery.
这些生长迅速的物种可以覆盖生长较慢的珊瑚，使它们得不到光照，无法恢复生长。
There are striking differences in life span between different species, but within one species the parameter is relatively constant.
不同物种之间的寿命存在显著差异，但在同一物种内，这一参数是相对稳定的。
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