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the speech will start like this :
                           good morning my dear sisters and brothers as we all know there are energy crisis in the world now-a-days because of the increasing populations now-a-days. many countries are also importing the natural resources from others. the other sources for us in our future is the solar energy, wind energy and hydro energy. the solar energy is going to promise the future that it would be for them because all other natural resources would deplete and at that time we can be only using the solar energy for all our purposes including industries and home needs like electricity but we will generate it with the help of solar energy but not using coal or something else. so, I conclude that solar energy will be used more in the future times.