Across
- 3. a system that drips water just at the roots to conserve water
- 4. a desert that's local name is "the place where no one comes out"
- 6. water pumped through underground aquifers
- 7. an area in a desert that has water
Down
- 1. removal of salt from the ocean
- 2. a place where only chemical salts remain
- 4. where crude oil is converted to useful products
- 5. petroleum that has not been processed