Question

4. Answer the following questions in brief :
(1) Which energy resource does man use the most? Why?
Ans.
(2) Why are energy resources needed ?
Ans. .......
Pg. 52
(3) Why do we need to use environment-friendly energy resour​

Answer 1

answer 1

the man use primary energy sources the most. These are the sources that provide a net supply of energy. COal,oil,uranium,etc,.It is important to note that the energy required to obtain these fuels is much less than what they can produce by their consumption or nuclear reaction. the oil energy is used about 39%. the supply of primary fuels is limited