Question

Conventional and unconventional source,
fossil fuels

Answer 1

hey... conventional source : coal , natural gas and firewood
non-conventional source : solar power, wind power , tidal power..


hope this helps !

Answer 2

unconventional resources or renewable resources are the resources which can be renewd within a short period of time. eg water, solar energy etc
conventional resources or non renewable resources are the resources which can be renewd in a long period of time. eg coal and petroleum.
Fossil fuels are the fuels formed by the natural deposits. these are formed million over years from fossils or dead animals.
hope it help