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 Orange13년 이하THIS IS SO BORING!!!
- elliot13년 이하that was very interesting
- Anika13년 이하This seriously frightens me. - Orange
- nick b. orange13년 이하The USA leaves so much carbon dioxide!
- devin orange13년 이하dont get it confusing
- Grace orange13년 이하that's interesting, but somethings I didn't quite understand.
- brooks orange 13년 이하this is vary confusing
- Hannah13년 이하Thats interesting
- sona orange13년 이하that is really sad!
- Amanda orange 13년 이하It was interesting but very hard to follow and understand