Across
- 2. Fundamental element of the planet.
- 4. Introduction of substances that affect the environment.
- 6. Place where we live.
- 7. Repopulation of the plants in a forest.
- 10. Resources that can be produced.
Down
- 1. Extinction of plants in a field.
- 3. Resources that cannot be produced.
- 5. Solid body into which water becomes as the temperature drops.
- 8. Produces Oxygen.
- 9. Place of the North Pole or that is related to this place on Earth.