A science teacher asked his students of standard X to collect information about various energy sources and find how each one affects the environment. The teacher also motivated them to debate the merits and demerits of each source and select the best source of energy on that basis.
Answer the following question :
(i) Mention two sources of energy based on their effect on environment which the students might have selected as the best.
(ii) Which of the two energy sources renewable or non-renewable would have more demerits as compared to the other and why ?
(iii) Explain how the science teacher took this issue in today'* reference.
