U6 revision

7 They will build a(n) ________ across the river.

• A) dam  

• B) barrier

• C) obstacle

4 Animals that live in the forest ________ for food.

• A) gather   

• B) forage

• C) sweep

1 The farmer spread the ________ on the field to help the crops grow.

• A) pesticide

• B) fertilizer

• C) herbicide

3 Some animals are now living in ________ environments because it’s easier to find food in the city.

                               

• A) urban  

• B) rural

• C) agricultural

Nobody knows for sure why the dinosaurs died ___.

Deforestation is the process of cutting ____ all the trees in an area.

Natural habitats are threatened __ human overpopulation.

Due to the effects of _______________, the grass should be watered often. EVAPORATE

4 You can’t see across the valley because of the _______________ from the cars. POLLUTE

There were big _______________ in the city centre against the plans for the new road. DEMONSTRATE