Question

why there is need for improvement in technology for using conventional sources of energy?

Answer 1

Biogas and animal dung etc are the conventional source of energy which are used as the fuel.
Since they are easily available and low cost fuel, so they are used in the tech. frequently.

Answer 2

It is important to use conventional sources of energy because there will be a depletion of fossil fuels in the near future and it will also reduce pollution in the environment. ... Wind energypossesses kinetic energywhich can be utilized to do work.