Across
- 2. Harmful and risky, often describes certain chemicals.
- 4. Air and water can become this when affected by pollution.
- 6. Polluted places are often described this way; the opposite of "clean."
- 7. This type of pollution affects the ground where plants grow.
- 8. This kind of pollution is loud and unpleasant to hear.
Down
- 1. What we call smoke and gas from cars and factories.
- 3. A small, white ingredient often used in cooking.
- 5. Something that comes from cars and can pollute water.