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Write the balanced molecular, ionic, and net ionic equations

The answer is a, because fossil fuels are burned to make energy, hence the geo (thermal) name.hope this !

The answer would have to be  reduce human impact on the environment 

Firstly, the planetary model of the atom  failed  to explain why individual atoms produce discrete  line spectra. in fact, according to rutherford's model, each individual atom should produce a  continuous  line spectrum. the second flaw to his model was the fact that electrons orbit the nucleus in a circular fashion.