Читать книгу Climate Change For Dummies - Elizabeth May - Страница 48

A lot of the carbon dioxide in the atmosphere is natural (you’re breathing some out, right now), but human activities also contribute plenty of the gas (we discuss these activities in Part 2). Historically, the carbon dioxide that people put into the air was pretty much soaked up by the carbon sinks, and the amount of carbon dioxide that was around before people started building factories had been fairly steady since the beginning of human civilization.

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FIGURE 2-5: How trees and soil work side-by-side with carbon dioxide.