these are the cycles that you need to answer:
nutrient cycle
oxygen and carbon dioxide cycle
nitrogen cycle
2006-09-25 23:59:45 · 2 answers · asked by Anonymous in Environment
oh sweety toooooooooooooooooo long to answer......well,it seems to be your homework...just go to google and find out
2006-09-26 00:08:19 · answer #1 · answered by catholica 4 · 0⤊ 1⤋
nutrient cycle
crop fertilisers,
live stock .
irrigation.
and dambs where these nutrients can accumilate , and produce The Green Algea bloom
oxygen carbon
Fossil fuel
Power plants relient on black and brown coal .
Industry
Petroleum driven motor cars.
Thats a start Im not sure about nitrogen
I will have to read your answers
just stepped out to have a look
use yahoo search , but here is a start for nitrogen
http://www.elmhurst.edu/~chm/onlcourse/chm110/outlines/nitrogencycle.html
2006-09-26 00:15:12 · answer #2 · answered by kevin d 4 · 1⤊ 0⤋