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 Orange약 13년THIS IS SO BORING!!!
- elliot약 13년that was very interesting
- Anika약 13년This seriously frightens me. - Orange
- nick b. orange약 13년The USA leaves so much carbon dioxide!
- devin orange약 13년dont get it confusing
- Grace orange약 13년that's interesting, but somethings I didn't quite understand.
- brooks orange 약 13년this is vary confusing
- Hannah약 13년Thats interesting
- sona orange약 13년that is really sad!
- Amanda orange 약 13년It was interesting but very hard to follow and understand