How Polluted Is Your City?
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We all know that global warming is caused by greenhouse gases, largely carbon dioxide, that is emitted by everything ranging from home appliances and SUV's to the heating and lighting systems of office buildings. But since we don't see the gas, most of us simply shake our heads in dismay and then continue on with our bad habits. Now, researchers at Arizona State University are trying to change that.
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지금 학습 시작하기댓글 137개
- Kate Orange14년 이하THIS IS SO BORING!!!
- elliot14년 이하that was very interesting
- Anika14년 이하This seriously frightens me. - Orange
- nick b. orange14년 이하The USA leaves so much carbon dioxide!
- devin orange14년 이하dont get it confusing
- Grace orange14년 이하that's interesting, but somethings I didn't quite understand.
- brooks orange 14년 이하this is vary confusing
- Hannah14년 이하Thats interesting
- sona orange14년 이하that is really sad!
- Amanda orange 14년 이하It was interesting but very hard to follow and understand