We have many kinds of energy and all these forms of energy is useful in one or the other way but the main motto of any of the energy form would be producing cost effectively energy and also efficiently. When obtaining energy from the nature and available resources the obtaining of energy process becomes simpler and also does not create any pollution as much as the artificial forms of energy does by emitting hazardous gas.
So, to maintain our environment clean and also to make a good future to our forth coming generations, we need to protect our earth from all damages that is caused to it by human . Also, another question occurs why to make the environment clean? It is because we, humans, and other living organisms can lead a happy life on the earth only if we have a balanced ecosystem. When the environment is getting polluted, we can't have the balanced ecosystem and so we are hurting the earth in a bad way.