Unit 5 band 5-6.6

To allow substance to get into the air around the Earth

To produce or provide something

Fuels such as coal or oil that are obtained from under the ground

The grey or black gas that is produced when something burns

A way of living that does not cause damage to the environment

A type of animal or plant that soon may not exist because there are very few now alive

To control energy so that you can use it

Doubting that something is true or useful

Energy from sources that continue to exist, for example wind or sun