Why are fossil fuels non-renewable?
Because they release lot of smoke, while burning
Because they take millions of years to form, so cannot be replenished
Because of the growing demand of the energy
Because we are consuming it at such alarming rates
Since non-renewable energy take millions of years to form. It cannot be replenished at the rate, by which we are consuming it.
Fossil fuels cannot be replenished by natural means at the same rate that it is consumed that’s why they are known as non-renewable sources of energy.