Question

Nonrenewable energy sources _____.

Answer 1

Answer:

The correct answer is option C, can eventually be used up

Explanation:

Nonrenewable energy sources are those resources which if once used cannot be re used again.  

For example – Coal, petroleum(petrol & diesel), fossils, natural gas etc.  

These resources cannot be replenished if once they are consumed as they take millions of year to form.

Also all these resources are made up of hydrocarbons thus they produce polluting gases on burning except natural gas.  

Answer 2

Non-renewable energy sources CAN EVENTUALLY BE USED UP.

Non renewable energy sources refer to those energy sources that can not be replenished. Once they are used up, new one can not be formed or produced, this is because they can only be formed by natural processes and these processes take millions of years to occur. Examples of non renewable energy sources are: coal, natural gas and oil. All the fuels obtained from fossils are non renewable in nature.