If not dealt with, the excess light can damage their photosynthetic machinery.

如果不解决这个问题，过量的光线会毁坏植中运行光作用的机制。

That's how much is being sucked in by these photosynthetic organisms.

这就是这些光生吸收的量。

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

整个植都在做光作用，所以它长得很快。

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

多亏了植和进行光作用的细菌，我们的大气中充满了碳水。

But that's just one of three ways that light entering a photosynthetic organism is used.

但是这仅仅只是光进入光生体内被使用的三种方式的其中一种。

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

浮游植大量的光作用产生了地球上一半的氧气。

Over the next few hundred million years, early photosynthetic cells just churned this stuff out.

在接下来的几亿年里，早期的光作用细胞产生了大量这样的质。

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，也就是进行光作用的食工厂，会抛弃珊瑚。

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

有一些浮游植，一些光作用的浮游生也进行垂直运动。

Because they don't have nutrients, the photosynthetic rates themselves will decrease.

因为这样它们就会得不到养分，光作用速度会下降。

In contrast, chlorophyll fluorescence is a direct measure of photosynthetic activity.

相比之下，叶绿素荧光能直接地测量光作用活动。

At least 50% of the oxygen on earth is produced by photosynthetic microorganisms like algae and cyanobacteria.

地球上至少 50％ 的氧气都是由光微生，例如藻类和蓝细菌产生的。

Those are Prochlorococcus. They are the smallest and most abundant photosynthetic cell on the planet.

那些是原绿球藻。它们是地球上最小和最丰富的光细胞。

And photosynthetic lifeforms like algae, that had ways of withstanding low-light conditions, also survived.

像藻类这样的光生命形式，能够承受弱光条件，也能生存下来。

Here a photosynthetic flagellate called Euglena deses is dividing.

这里是一张名为裸藻的光作旗鞭藻正在分裂的照片。

Corals can be found here, but lack the  photosynthetic symbiotes of their tropical sunlit cousins.

这里可以找到珊瑚，但缺少其热带阳光表亲的光共生体。

They feed mainly on plankton, like photosynthetic cyanobacteria.

它们主要以浮游生为食，比如光作用的蓝藻。

They jumped ship, leaving the chitin rafts  behind to be full-time photosynthetic drifters.

他们跳船了，留下了几丁质筏子，变成了全职的光作用漂流者。

Today this previously poisonous photosynthetic trash gives us life.

今天, 这种以前有毒的光垃圾给了我们生命。

And whatever oxygen that was available was mostly being produced by photosynthetic cyanobacteria near the surface.

而当时可用的氧气主要是由靠近水面的光作用蓝藻产生的。