Across
- 2. a space in something, with an opening on one side
- 5. Things like water can flow in a long, round thing
- 6. with a lot of water
- 9. something like air, not liquid or solid
- 10. the power from sources such as the sun, water, wind and coal
- 12. use waste or chemicals to make rivers and seas dirty
- 13. the parts of a tree with leaves, flowers, or fruit on them
- 14. You use a kind of white powder from the sea in cooking
- 16. You can leave this kind of mark especially when you walk in the sand
- 18. The sun gives out bright light
- 19. We live on this planet
- 20. the surface of the earth
Down
- 1. an area to grow crops
- 3. Trees produce this kind of air with the help of the sun
- 4. an illness
- 7. large things such as tables, chairs, or beds
- 8. with little water
- 11. a very high area of land with steep sides
- 15. A thing is picked or produced recently
- 17. a part of ground instead of sea or ocean