Across
- 4. describes the numbers of different animals and plants living in an environment
- 5. are crops that are sold for profit.
- 7. large farm
Down
- 1. planting of young trees in areas that have been stripped of forests.
- 2. lowers trade barriers between the countries
- 3. a member of a small defensive force of irregular soldiers
- 6. helped ensure the foreigners’ economic success