Question

Briefly explain the change expected in switching from non-conventional to conventional sources of energy.

Answer 1

changes r less pollution and less harm to environment
eco friendly and less use of natural resources as well as it should not have any side effects, it should be easy to use and harness.The progress sholud not be stopped due to lack of energy ,one should be comfortable in using with it shouldn't have hazardous effects on nature

Answer 2

Switching from conventional energy sources - fossil fuel burning , oil, coal. 
Hydro-electric power generation, atomic nuclear energy.

non conventional sources = wind power, ocean wave power, solar energy, cosmic radiation.

The change will enable the world to live without power cuts.  Energy will become cheaper after some years.  The sources of energy will not deplete.  The ecosystem and environment will be less disturbed.  Pollution will be less.  Greenhouse gases will be reduced in the atmosphere.   The conventional fuels will last longer.  

Newer technologies will develop and more employment will result in.
More efficient generation and use of energy in the gadgets will be possible.