…………….. useless materials that are left after you have used something.

Scientist are finding ways to …………. damage to the environment.

Some people say that wind farms spoil the ……………….

We have to follow a lot of safety…………… at work.

The land under the wind turbines ……….

Wheat and barley are ………….. grown in Iraq.

The opposite of deep is ……..

cutting down tress and wood is ……..

If ……………….. continues , many species of animals will disappear completely.