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How does the carbon cycle work? Visit this website to learn more about the carbon cycle.
> Kids' Crossing: Living in the Greenhouse
(from The University Corporation of Atmospheric Research)
After reading, think about the following questions:
- This resource states that there is 30% more carbon dioxide in the air now than there was 150 years ago. Where was the carbon dioxide before?
- What happened to release the carbon dioxide into the atmosphere?
