Across
- 2. cattle,sheep,antelope,deers
- 5. diversity of biological communities
- 8. process of being urban
- 10. land able to grow crops
- 13. number of children to be born to a women
- 14. fertile land becomes a desert
- 15. sinking area of land
- 18. mining below the earth's surface
- 25. pathogen that invades the body
- 26. natural resources
- 28. growing particular crop in an area
- 30. mining when soil is removed to reach the minerals
- 31. material or energy source in nature
Down
- 1. modification of genes
- 3. number of deaths in a given period
- 4. cultivation of aquatic plants for food
- 6. mining that uses water
- 7. dissolves in water
- 9. variety of genes in a population
- 11. average time a person is expected to live
- 12. statistical data relating to a population
- 16. difficult to buy fresh food
- 17. ridge of land that separates water to flowing rivers and lakes
- 19. capacity of earth's natural systems
- 20. toxins in an organism
- 21. variety of life on Earth
- 22. cultivation of waste land
- 23. insect that invades crops
- 24. process of removing salt from the water
- 27. study of harmful effects of substances on organisms
- 29. safe drinking water