Asked by chy

what are the four biogeochemical?
Answered by Ms. Sue
http://en.wikipedia.org/wiki/Biogeochemical_cycle
Answered by chy
my teacher said i cant go on wilipedia
Answered by Ms. Sue
Are you asking about biogeochemical cycles?

Answered by chy
yes
Answered by Ms. Sue
http://www.dummies.com/how-to/content/discovering-the-biogeochemical-cycles.html

http://www.scopenvironment.org/downloadpubs/scope21/chapter02.html
Answered by chy
thx
Answered by Ms. Sue
You're welcome.
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