Question

58. .................. are the main conventional energy sources.

(a) Fire wood (b) Fossil fuels (c) both (a) and (b) (d) None of these​

Answer 1

Answer:

both

I hope this answer may help you

Answer 2

Explanation:

Conventional energy sources includes oil, gas and coal. These conventional sources are usually fossil fuels. ... These sources of energy are in limited quantity except hydro-electric power. These include commercial (coal, petroleum, electricity etc..) an