Another major threat is the falling numbers of insects and the extinction of many species.

另一个主要威胁是昆虫数量的下降以及很多物种的灭绝。

And it was only one of many species of carnivorous whales in the middle Miocene.

而且，它只是中新世中期众多食肉鲸类中的一种。

During the Ice Age, Florida was crucial to the survival of many such mild-weather species.

在冰河时代，佛罗里达对于许多温和气候物种的存活起到了至关重要的作用。

The disappearance of pollinators led to the swift decline of many plant species and the entire ecosystem soon crumbled.

授粉者的消失导致了很多植物物种的迅速衰落而整个生态系统也很快崩塌。

And then it goes on, talks about an asteroid impact which inhibited photosynthesis and caused the eradication of many species.

然后它继续说，小行星撞击抑制了光合作用，导致许多物种灭绝。

These social attraction techniques are now critically contributing to the restoration of many threatened and endangered species across the world.

这些社会性吸引技术，现在对世界上许多受到威胁和濒临灭绝的物种的恢复都起着至关重要的作用。

And this coincided with a mass extinction of many marine species.

而这恰逢许多海洋物种的大规模灭绝。

Early embryos of many species develop ancestral features.

很多物种的早期胚胎会发展祖先的特征。

Actually, it's not only reptiles who behave this way – the females of many animal species are able to reproduce without sex.

事实上，不只是爬行动物有这种行为——很多动物物种的雌性都可以无性繁殖。

With the deaths of so many plants and animals, the food chain collapsed This led to the deaths of many more species.

随着这么多动植物的死亡，食物链崩溃了，这导致了更多物种的死亡。

Human blood is sticky when it clots, and would certainly bind cinnabar to gold for a millennium-but so would that of many other species.

人类血液凝结时是粘性的，可以将朱砂和黄金粘合长达一千年，但许多其他物种的血液也是如此。

'There's an acute need to obtain more sound recordings of many species, of the dawn chorus and sounds at night, ' Benner says.

本纳说：“迫切需要获得更多许多物种、黎明合唱和夜间声音的录音。”

All those who have attended to the subject, believe that there is the severest rivalry between the males of many species to attract, by singing, the females.

所有关注过这个问题的人都相信， 许多物种的雄性之间存在着最激烈的竞争， 目的是通过唱歌来吸引雌性。

Railroads gave us faster and more convenient transportation as they simultaneously signaled the death knell of many species of migratory animals as well as served up noise and air pollution.

铁路为我们带来更快速和便利的交通，却也敲响许多迁移性动物的丧钟以及产生噪音和空气污染。

Its teeth have been found stuck in the ribs of many unidentified whale species, as well as the tiny Piscobalaena, and even in a pinniped about the size of a sea lion.

它的牙齿被发现卡在许多未确定种类的鲸鱼的肋骨中，也发现在小型的鱼鲸，甚至是和海狮大小相似的海豹类动物身上。