Across
- 4. the materials in which objects are wrapped in before they go on sale
- 7. container made from cardboard or plastic
- 9. unexpected events that cause a lot of damage, injury or death
- 10. where waste material is buried under layers of earth
- 11. external surroundings in which people, animals and plants live
Down
- 1. broken down by bacteria
- 2. unwanted material left after something has been used
- 3. material which will naturally decay
- 5. relationship between humans, animals, plants and their environment
- 6. the introduction of something into the environment which has harmful effects
- 8. supply or source of power