Chemical Changes on Earth H2+0=H20 6H20+6C02=C6H1206+602 Energy loses as heat(Energy transfer is linear) Nutrients (element)can be reused over and over again3 Chemical Changes on Earth H 2 + O = H 2 O 6 H 2O + 6 C O 2 = C 6 H12 O 6 + 6 O 2 Energy loses as heat (Energy transfer is linear ) Nutrients (element) can be reused over and over again