Across
- 3. the state of having too many people living in a certain area
- 5. the area that is not quite a desert, but also very dry and not suitable for much plant and animal life
- 6. a nutrient-rich layer of dirt
- 8. most; a great number
- 10. very harmful; poisonous
- 12. relating to public health and cleanliness
- 13. the process of damaging the top layer of soil, leading to the land becoming more desert-like
- 14. when animals eat the grass or plant-life in a field
- 15. the way something is shared among a group, or spread through an area
- 18. extreme scarcity (lack of) food
- 19. the state of being extremely poor
- 21. the activity of buying or selling, especially on a large scale
- 23. an organism that lives on or in another species, and benefits from taking nutrients from the other species
- 24. a city
- 25. adding something to the environment that is harmful or damaging
Down
- 1. long periods of very little rainfall
- 2. slowly; happening over time
- 4. the death of an entire species
- 7. to give something that will be helpful
- 9. important
- 11. unable to produce crops; lifeless
- 12. suffering or death caused by hunger/lack of food
- 16. to eat or drink something; to take something into the body
- 17. farm animals that are used to sell or trade
- 20. the act of making something less clean or the act of polluting
- 22. to destroy or ruin