No you can not replace them.
Coal and natural gas are great resources because they do take millions of years to replace and have a virtually endless supply.
An advantage of using coal and natural gas is that is is virtually an endless natural resource.
Coal, Natural Gas and Oil
B. Coal
Coal is one. Oil is another. Natural gas (methane) is a third.
Millions and millions of years.
Once used, there is no more (at least not for millions of years).
Coal is a natural resource formed from the remains of plants that died millions of years ago. These plants underwent decomposition and heat and pressure over time, which resulted in the formation of coal deposits.
Coal is a natural mineral. You might be confusing this with charcoal which is man-made.
Coal, petroleum and natural gas took millions of years to form. Which is why they are classed as non-renewable resources.
Coal, petroleum and natural gas took millions of years to form. Which is why they are classed as non-renewable resources.
It is a fossil fuel.