Across
- 4. Expansion of dry areas due to overgrazing or drought.
- 7. The process of dealing with, controlling and looking after.
- 10. The totality of our surroundings.
- 11. The variety of all life forms.
Down
- 1. The ability to be maintained at a certain rate or level.
- 2. The weather conditions prevailing in an area in general or over a long period.
- 3. the area occupied or the extent to which something is affected.
- 5. Gas produced by burning carbon and organic compounds and by respiration
- 6. Owners of a company intersted in making a profit.
- 8. Existing in finite quantity; not capable of being replenished.
- 9. Never ending or changing.