science 6th grade?

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what materials are part of the 3 most important cycles in ecosystems?

2007-03-28 16:49:13 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology

please i need it right now

2007-03-28 16:50:00 · update #1

THANK YOU!!

2007-03-28 16:54:47 · update #2

2 answers

nitrogen, carbon, water

2007-03-28 16:52:31 · answer #1 · answered by ecolink 7 · 0⤊ 1⤋

o2 Is the most important materials that it does not exist we do not have any organisem in the earth

co2 is the other one that important for planet

and N2 with ch4

2007-03-29 09:09:34 · answer #2 · answered by ramin007e 2 · 0⤊ 0⤋