Across
- 3. A vast body of salt water that covers most of Earth's surface and supports a wide variety of life.
- 5. A man-made material that is lightweight, durable, and used to make many everyday products.
- 8. A very small piece of plastic, less than 5 millimetres in size, that can pollute water, soil, and living organisms.
- 9. The process of collecting and converting waste materials into new products that can be used again.
- 10. The introduction of harmful substances or waste into the environment.
Down
- 1. A sequence that shows how energy and nutrients pass from one living thing to another through feeding relationships.
- 2. Materials that are unwanted or no longer needed and are discarded.
- 4. A community of living things and their physical environment interacting with one another.
- 6. Able to break down naturally by microorganisms into harmless substances over time.
- 7. The natural home or environment where a plant, animal, or other organism lives.