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

氮是蛋白质、DNA和让植物合作用的叶绿素所必需的。

To understand why, think back to photosynthesis and chlorophyll.

想知道为什么，请回想一下合作用和叶绿素。

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

它需要阳，这样才能合作用。

The whole of the plant is pretty much photosynthetic, so it grows fast.

整个植物都在做合作用，所以它长得很快。

Will it grow, photosynthesize, produce seeds, or flower?

它是生长、合作用、 产生种子，还是开花？

So these orchids, they don't even make green leaves to photosynthesize.

这些兰花，它们甚至不生长绿叶来合作用。

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

虫黄藻通过合作用来合成食物，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.

通过人工合作用，也许我们可以分裂水分子，像植物一样料。

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

合作用产生了一种“废物”——氧气，它对地球上最初的生物体来说是有毒的。

Our atmosphere is full of it thanks to plants and photosynthetic bacteria.

多亏了植物和合作用的细菌，我们的大气中充满了碳水化合物。

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

在面对人工热浪的树木中，合作用几乎停滞。

They're cyanobacteria. They're green. They photosynthesize. They need light, but they also need water.

它们是蓝细菌它们是绿色的，能合作用。它们需要，当然也需要水。

Phytoplankton's massive photosynthetic blooms produce as much as half of Earth's oxygen.

浮游植物大量的合作用产生了地球上一半的氧气。

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

要想理解这个新的突破，重点要了解合作用如何运作。

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

这非常适合合作用，而合作用又是兴奋剂，您好，浮游植物的生产力！

Photosynthesis takes sunlight and stores solar energy in chemical bonds.

的合作用吸收了太阳能并把它存储在化学键中。

You see in the fall leaves stop their food making process and the chlorophyll declines.

你看，在秋天，树叶的合作用减弱，叶绿素减少。

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的DNA，叶绿体是负责合作用而不是繁殖的细胞器。

And then, the symbiotic algae that live inside corals-which are photosynthetic food factories-abandon the corals.

之后，珊瑚礁体内的共生藻类，也就是合作用的食物工厂，会抛弃珊瑚。

There are some phytoplankton, some photosynthetic plankton that also undergo vertical movements.

有一些浮游植物，一些合作用的浮游生物也垂直运动。