Homework Help: social studies

Posted by Justin on Thursday, May 29, 2008 at 10:09pm.

mexico city is surrounded by mountains. what effect has this had on the air quality in this city?

social studies - Ms. Sue, Thursday, May 29, 2008 at 10:30pm
Check the last sentence in the fifth paragraph.

http://encarta.msn.com/encyclopedia_761569238/mexico_city.html

This site may also help you.

http://visibleearth.nasa.gov/view_rec.php?id=3419

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