How are food chains important in biogeochemical cycles?

Answer 1

Since this is not my area of expertise, I searched Google under the key words "'food chains' 'biogeochemical cycles'" to get these possible sources:

http://www.marietta.edu/~biol/102/ecosystem.html
http://ghs.gresham.k12.or.us/science/ps/sci/ibbio/ecology/notes/cycles/biogeochem.htm
http://www.bio.georgiasouthern.edu/Bio-home/Gleason/Env_Biol/Energy-Biogeochemical.htm

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.