These grasslands make up the largest biome in North America.

这些草原构成了北美最大的生。

So this is now a really significant biome on earth, and it's largely unknown.

因此，这是地球上非常重要的生，而且大多数是未知的。

Like, think about an aquatic — or water-based — biome.

比如，想想水生或水基生。

Take the savanna, for example — a transitional biome between forests and grasslands.

以稀树草原为例，它是森林和草原之间的过渡生。

That came at a price, however. Almost half of the original biome has been destroyed.

然而，这是要付出代价的。几乎半的原始生已经被摧毁。

That's essentially a semi-arid steppe biome and an extension of the vast American Great Plains.

这基本上是半干旱的草原生，是广阔的美国大平原的延伸。

And plants are a major part of nearly every single biome.

植几乎是每个生的主要组成部分。

Temperate grasslands have the lowest level of protection of the world's 14 recognised “biomes”, or habitats.

界14个受保护的生和栖息地中，温带草地的保护水平最低。

Each biome contains multiple ecosystems, and all but the most frigid arctic regions are supported by plants.

每个生都包含多个生态系统，除了最寒冷的北极地区外，所有地区都由植支撑。

On the bad side, the presence of mountains only amplifies the previous negatives with developing desert and jungle biomes.

从不利的面来看，山脉的存只会扩大之前发展沙漠和丛林生的不利因素。

The nodules are a core part of a biome roughly the size of the Amazon rain forest, she notes.

她指出，这些结核是个大致相当于亚马逊雨林大小的生的核心部分。

The Atlantic rainforest is one of the planet's most threatened biomes, more than 90 percent of it was deforested and destroyed.

大西洋雨林是地球上受威胁最严重的生之，有超过百分之九十的森林被砍伐和破坏。

The desert is the driest biome on Earth.

沙漠是地球上最干燥的生。

And along the way, they're disrupting grassland biomes that aren't used to so many trees.

此过程中，它们破坏了不习惯这么多树木的草地生。

But no matter how many biomes there are, plants have important roles to fill in them.

但无论有多少生系，植都扮演着重要的角色。

It's made up of different ecological regions, or biomes, where communities of organisms are adapted to specific climate conditions.

它由不同的生态区域或生组成，生适应特定的气候条件。

This is a huge biome that we carry in our bellies every single day.

这是我们每天都肚子里携带的巨大生。

The more diverse our biomes are, the more security they have against species extinction and threats to their food webs.

我们的生越多样化，它们就越能抵御种灭绝和食网受到的威胁。

There are almost no trees in this biome.

这个生系中几乎没有树木。

They're only a few meters thick, but they support all agriculture and every single terrestrial biome.

它们只有几米厚，但它们支撑着所有农业和每个陆地生。