Across
- 2. To make water, air, soil, etc dirty or harmful
- 4. An accident in which oil has come out of a ship and caused pollution
- 6. The number and types of plants and animals that exist in a particular area or in the world generally
Down
- 1. A global problem that arises from the exploitation of the ocean as a garbage pit
- 3. Water that is safe for people to drink
- 5. To pass a liquid or gas through a piece of equipment in order to remove solid pieces or other substances
- 7. Things that you throw away because you do not want them