- And accumulated on the seabed.
并沉积在海床 - These strata are the product of those billions and billions of shells.
这些地层便是数以亿计的贝壳的产物 - Thanks to them, the carbon drained from the atmosphere,
多亏他们 碳被从大气分离 - And other life-forms could develop.
其他生物得以发展 - It is life that altered the atmosphere.
是生命改变了大气 - Plant life fed off the sun's energy,
植物以太阳能为生 - Which enabled it to break apart the water molecule...
这使它能够分解水分子