What is conservation of energy and what are its consequences if we don't conserve and what are the various ways to conserve it?

energy is of different forms.we can get energy through solar ,wind,and many other conventional and non conventional sources of energy.

so by proper usage i.e reducing the misuse of electricity.we can conserve energy.
and also by using Natural Resources like bio gas.

and also the govt should encourage research in cold fusion .so that electricity can be generated at low temperatures and at low cost

"we" can conserve by having a brisk walk to shorter distances instead of using bikes,cars...that cause pollution..

by switching off lights at day time you can be a contributer in reduction of co2 emission..

there are many such things that can be done with the human intervention ...