Are the outlines of the carbon cycle really that familiar?

碳循环的轮廓真的是我们所熟悉的那样子么？

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The three most important nutrient recycles are the nitrogen cycle, the carbon cycle and the one we are going to talk about today, the Phosphorus cycle.

这三种最重要的营养循环包括氮循环、碳循环和我们今天要讲的磷循环。

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The carbon cycle is the stuff of school books.

碳循环是学校书本上的东西。

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Researchers think that the carbon cycle turns over about 330 billion tonnes of carbon dioxide each year.

ECONOMIST: Two new satellites will monitor carbon-dioxide emissions

That will help those who seek to understand the carbon cycle and with it, the consequences of greenhouse-gas-induced climate change.

ECONOMIST: Terrestrial ecology: NEON light | The

Researchers think that the carbon cycle adds up to the production of about 330 billion tonnes of carbon dioxide each year.

ECONOMIST: Two new satellites will monitor carbon dioxide emissions