Elements and compounds are cycled through the living and nonliving parts of the ecosystem and converted to useful forms by a combination of biological, geological, and chemical processes which are driven by solar energy: carbon, oxygen, nitrogen, hydrologic (water) cycles.
(Elements and compounds; converted; to useful forms; by a combination of biological, geological, and chemical processes which are driven by solar energy: carbon, oxygen, nitrogen, hydrologic (water) cycles) (chemical processes; are driven; by solar energy)
Elements and compounds chemical processes
converted are driven
to useful forms by a combination of biological, geological, and chemical processes which are driven by solar energy: carbon, oxygen, nitrogen, hydrologic (water) cycles
by solar energy