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
- Sarah- Orange약 13년The United States generates so much more Carbon Dioxide than other countries!
- justin약 13년wow cool
- cahleb약 13년crasy
- hi약 13년yah i care
queen12약 13년me too
- space out약 13년people don't care about this kind of stuff. THEY SHOULD!!!!!!!!!!!!!!!!!
- Beany Baby약 13년People are so selfish now days. If we would just stop and look at the efect that we are haveing on the Earth than it wouldnt be as polluted and it would be a lot safer too.
partyhouse약 13년People always say that they will try to improve on the problems we have in the world right?????? But it will take probally 10 to 20 years!!!!! hope they find a faster route...- lila약 13년thanks for this article i am using this for project exite definitely
- jaquaveon p약 13년i learn some new thing in the atride
kanegirl88약 13년The U.S. needs to use solar and wind energy!
first928약 13년Make that the world!