Across
- 2. - Deep gorge formed by erosion, often with steep sides
- 3. - Sandy or pebbly shore along a body of water
- 7. - Climate characterized by high temperatures and heavy rainfall
- 9. - Direct sunlight or the feeling of warmth it provides
- 10. - Reproductive structure of a plant, often brightly colored
- 12. - Arid region with little rainfall and sparse vegetation
- 13. - Variety of plant and animal species in an ecosystem
- 16. - Large mass of ice that moves slowly over land
- 18. - Daily event when the sun disappears below the horizon
- 19. - Large body of saltwater covering most of the Earth's surface
- 20. - Contamination of the environment by harmful substances
Down
- 1. - Protection and preservation of natural resources
- 4. - Long-term pattern of weather conditions in a region
- 5. - Community of living organisms interacting with their environment
- 6. - Animals living in their natural habitat
- 8. - Dense area of trees and vegetation
- 11. - Landform that rises steeply above its surroundings
- 14. - Opening in the Earth's crust that allows molten lava to escape
- 15. - Natural feature where water flows over a vertical drop
- 17. - Natural watercourse that flows towards an ocean or lake