Across
- 2. the path that water takes as it flows downhill towards the ocean
- 3. when water covers land that is usually dry
- 6. something that baffles our understanding and cannot be explained
- 9. shortage of rain over a long period of time
- 11. a cereal grain
- 12. a group of people with their own languages and way of life
- 15. to live, to have reality
- 16. the buying and selling of goods and services
Down
- 1. conclusions based on ideas that can be tested
- 4. having things you need and knowing where to find them
- 5. the largest city of the ancient Indus Valley civilization
- 7. to suffer or die or cause to suffer from lack of food
- 8. a person who conducts research to gain more knowledge in a particular area
- 10. a condition that impairs the proper function of the body or of one of its parts
- 13. very old, or having existed for a long time
- 14. small hills