G7-unit 10-green energy 1

For a long time, people used ................ in fires to stay warm and to make food.

Wood is ........................

but wood burns too ....................

trees grow much too ...................

Other old ways of making energy, like using.............., are not ...........................

• oil - nonnewable

• gas- renewable

• oil-renewable

• gas-nonrenewable

It is also not .....................

Burning wood and oil can also make

We must find other, cleaner ways to get the .................. we nee

We call this kind of energy ............................

Green energy is ..............................