UCSB Science Line
Sponge Spicules Nerve Cells Galaxy Abalone Shell Nickel Succinate X-ray Lens Lupine
UCSB Science Line
Home
How it Works
Ask a Question
Search Topics
Webcasts
Our Scientists
Science Links
Contact Information
What percentage of atmosphere pollution is actually caused by cars instead of natural gases?
Answer 1:

Cars release approximately 333 million tons of carbon dioxide (CO2) into the atmosphere annually, which is 20% of the world's total, according to the Environmental Defense Fund. Motor vehicles also contribute 72% of the nitrogen oxides and 52% percent of reactive hydrocarbons.


Answer 2:

This depends on where you are and when. In a city, most of the pollution is car or power-plant driven. On a dormant or active volcano, most of the "pollution" is natural. For places outside of cities and volcanos, it depends on what nearby cities there are and how far away they are, and what nearby volcanoes there are and how active they are at the moment.



Click Here to return to the search form.

University of California, Santa Barbara Materials Research Laboratory National Science Foundation
This program is co-sponsored by the National Science Foundation and UCSB School-University Partnerships
Copyright © 2015 The Regents of the University of California,
All Rights Reserved.
UCSB Terms of Use