500
Explain why coal and other fossil fuels are considered nonrenewable energy sources. (b) State one disadvantage of burning coal, other than coal is a nonrenewable energy source.
(a) — Coal cannot be easily replaced once the supplies are used up.
— Supplies of coal are limited.
— Fossil fuels take millions of years to form.
(b) — CO2 is released.
— Harmful gases are produced.
— pollution
— global warming
— Burning coal/fossil fuels harms the environment.
— air pollution
— water pollution