What percentage of Earth's oxygen is produced by the Amazon rainforest?

由亚马逊雨林产占全球量比重是多少呢？

The primary method of generating breathable oxygen onboard the ISS revolves around oxygen generators.

在国际空间站上产可呼吸主要方法围绕着器。

So how do these oxygen generators produce breathable oxygen?

那么这些器是如何产可呼吸呢？

Every other breath we take is thanks to oxygen produced by the ocean.

我们每隔一次呼吸所吸入都来自于海洋产。

It's the coal that provides the molecule, creating the reaction to get rid of the oxygen.

煤矿分子产了去除反应。

They say forests, including the Amazon, absorb about the same amount of oxygen as they produce.

他们认为森林（包括亚马逊）能够吸收它们产那么多。

Even today, organisms that don't use oxygen to make energy are almost all just single, microscopic cells.

即使在今天，不利用产能量体几乎都是单一微观细胞。

They generate half of the world's oxygen, regulate our climate, and provide food for more than three billion people.

它们产全球一半，调节我们候， 并为超过三十亿人提供食。

Also, as trees age, they begin to absorb  less CO2 and produce less oxygen.

此外，随着树木年龄增长，它们开始吸收更少二化碳并产更少。

Currently, the ISS cannot pressurize generated  oxygen to support astronauts on spacewalks.

目前，国际空间站无法对产进行加压以支持宇航员进行太空行走。

So how did eating the oxygen-making bacteria create more oxygen?

那么，吃掉那些产细菌是如何产更多呢？

So phytoplankton get more light, photosynthesize more, and make more oxygen.

所以浮游植得到更多光， 进行更多光合作用， 产更多。

So we can look at the oxygen that's being produced in an aquatic environment.

因此，我们可以观察水环境中产。

Rainforests produce large amounts of oxygen, cloud forests produce comparative amounts of water.

热带雨林产大量 云森林产相当数量水。

Before they came along, any oxygen that was produced was being used up at the oceans' surface.

在它们出现之前，产任何都在海洋表面被消耗掉了。

In the bottom layer, there's a limited oxygen production from photosynthesis because you're deep down, it's dark.

在底层，由于位置很深，光线昏暗，光合作用产非常有限。

Cyanobacteria are tiny microorganisms that produce oxygen using sunlight as well as water and carbon dioxide.

蓝细菌是能够利用阳光、水和二化碳产微小微。

The more that we get rid of our natural green spaces, the less we're able to have that oxygen naturally generated in our environment.

我们越是放弃自然绿色空间，我们环境中自然产就越少。

Well, the oxygen that comes out of that process is a byproduct, or something that's made by the nature of the process, not on purpose.

这个过程中产是副产品，或者说是这个过程自然产，不是故意。

The weakened fall leaf then becomes vulnerable to the highly destructive effects of the oxygen created by the excited chlorophyll molecules.

脆弱秋叶随后变得容易受到激叶绿素分子产破坏性影响。