Nitrogen is needed for proteins, DNA and the chlorophyll that let plants perform photosynthesis.

氮是蛋白质、DNA和让植物进行光合作用叶绿素所必需。

To understand why, think back to photosynthesis and chlorophyll.

想知道为什么，请回想一下光合作用和叶绿素。

It would have needed sunlight for that so that photosynthesis could begin.

它需要阳光，这样才能进行光合作用。

Zooxanthellae supply their coral hosts with food, which they produce through photosynthesis.

虫黄藻通过光合作用来合成食物，并将其贡献给珊瑚宿主。

With artificial photosynthesis, maybe we can split water molecules to make fuel like a plant.

通过人工光合作用，也我们可以分裂水分子，像植物一样制造燃料。

Photosynthesis produced a waste product, oxygen, which was poisonous to the first organisms on Earth.

光合作用产了一种“废物”——氧气，它对地球上最初物体来说是有毒。

Photosynthesis ground to a near halt in the trees facing the artificial heat wave.

在面对人工热木中，光合作用几乎停滞。

Mitochondria basically reverse photosynthesis, in a similarly complex process.

线粒体以类似复杂过程， 基本上逆转了光合作用。

To understand the new breakthrough, it is important to know how photosynthesis works.

要想理解这个新突破，重点要了解光合作用如何运作。

I mean, green photosynthesis accounts for more than 99.9% of the natural productivity on Earth.

绿色光合作用在地球自然产力占比超过 99.9%。

This is perfect for photosynthesis and photosynthesis is dope, Hello phytoplankton productivity!

这非常适合光合作用，而光合作用又是兴奋剂，您好，浮游植物产力！

Photosynthesis takes sunlight and stores solar energy in chemical bonds.

光合作用吸收了太阳能并把它存储在化学键中。

Instead, they modified the DNA in the chloroplasts-organelles responsible for photosynthesis, not reproduction.

相反，他们修改了叶绿体中DNA，叶绿体是负责光合作用而不是繁殖细胞器。

Over time, that evolved into a chloroplast, the organelle that does photosynthesis.

随着时间推移，它们进化成叶绿体，也就是进行光合作用细胞器。

The leaves use the ample sunlight up there to create sugars through photosynthesis.

叶子利用那里充足阳光通过光合作用产糖。

Their invention-a small biological circuit they call E-Kaia-harnesses the energy plants produce during photosynthesis.

这3位在校学发明是一种名为E-Kaia物充电器，原理是利用植物在光合作用中产能量。

It stops photosynthesis so the trees cannot take in the carbon.

它会阻止光合作用，那样木就不能吸收碳了。

So much that photosynthesis becomes impossible for 99% of Earth's plants.

甚至使得 99% 植物无法进行光合作用。

You can hopefully see that aerobic respiration works in the opposite way to photosynthesis.

你可以看到有氧呼吸与光合作用相反。

Plants have a system called photosynthesis which provides us with oxygen.

植物有一个名叫“光合作用”系统，它能够产氧气。