1. We talk about different types of rubbish: solid, [?] and gas.

2. Chemicals need to be disposed in a careful way because they are [?] waste.

3.[?] produce industrial waste.

4. Domestic rubbish comes from [?] waste.

5. Materials that break down naturally in the environment are called [?] .

6. Materails that do not break down naturally in the ground are [?].

7. The amount of rubbish is growing for a number of reasons: The population is [?] , new [?] materials are developping and the lifestyles are changing. People consume more [?]