there running out
oil
Coal IS a fossil fuel
Vegetable oil is renewable, fossil fuel is not.
costlier
Natural gas (methane (CH4)) is the cleanest burning, emitting less carbon dioxide than the others (coal and oil).
Solar Energy
because their resources are limited and fossil fuel consumption rate is higher than their possible production rate.
oil
People are burning fossil fuel quicker than it's naturally made
an alternative
All fossil fuels are being used faster than they are replaced. Fossil fuels by definition take millions of years to form.
Sometimes