And then it bottoms out and starts to get rich again.

“微生物的数量到最低点，然后再次开始跃起来。”

Also, the overall number of marine animals has gone down by about half since 1970.

另外，自1970年以来，海洋生物的总体数量已了近一半。

The unit for this is number of organisms.

其单位是生物体的数量。

But this still only explains why there's more life, not why there is more different kinds of life.

但这只能解释生物数量的丰富，而不能解释物种的多样。

The width of the bar in the number pyramids represents the number of organisms in that trophic level.

数字金字塔中条形的宽度代表该营养级中生物的数量。

Stool sample analysis revealed significant differences in the diversity and volume of microbes between the monks and their neighbours.

粪便样本分析显示，僧侣和他们的邻居在微生物的多样性和数量上存在显著差异。

They can be used to show numbers of organisms or biomass of each trophic level in ecosystem.

它们可以用来显示生态系统中每个营养水平的生物数量或生物量。

Human activity is the driver of the declines we're seeing, primarily our demand, our increasing demand for food, energy, water.

动导致了当前生物数量的减少，这主要是因为我们对食物、能源和水资源的需求日益上升。

Insects make up the largest class of animals on earth and represent more than half of all known living organisms.

昆虫是地球上数量最多的一动物，占所有已知生物数量的一半以上。

They are food for so many of the inhabitants here, and they're so numerous they really dominate the oceans around here.

它们是这里许多其它生物的食物，它们数量如此之多，它们主宰了这片海洋。

Researchers say these creatures will now reproduce in larger numbers than before because of the extra space created by the rubbish.

研究员表示，由于垃圾产生的额外空间，这些生物现在的繁殖数量将比以前更多。

People who study science use this word to talk about the number of different kinds of living things on the earth.

研究科学的用这个词来谈论地球上不同种生物的数量。

Some scientists estimate that the mass of microbes living deep underground equals the mass of all the life at Earth's surface.

一些科学家估计生在地的微生物的数量，跟所有生存在地球表面的生物的数量差不多。

Gradually, the population of sugar-loving microbes in your mouth will decline.

渐渐地，你口腔中嗜糖微生物的数量将会减少。

So bottom-feeding fish populations may increase, even if plankton-eating fish population decrease.

因此，即使以浮游生物为食的鱼数量减少，底栖鱼数量也可能会增加。

A positive association between the amount of marine life and the number of nodules.

海洋生物的数量与多金属结核的数量之间存在正相关关系。

It would be the amount of soil life.

那就是土壤生物的数量。

And in one teaspoon of soil, there are more microorganisms than there are people on the Earth.

在一茶匙土壤中，微生物的数量比地球上的口还要多。

In the 1800s, there were more than a million of the bright

19世纪时，这种鲜艳的生物数量曾超过百万。

One estimate suggests there are more of these ocean mud microbes than there are stars in the sky.

一项估算显示，这些海洋泥浆微生物的数量可能比天上的星星还要多。