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Across 4. area of deep water found at the bottom of the waterfall 6. area of high atmospheric pressure 8. hot weather for unusually long periods of time 9. points where two streams join together 11. when particular etinic groups live in the same area 13. the process of people moving from one country to another 14. a bend in the river 15. the money claimed by a senior citizen

Down 1. a lake shaped like a horseshoe 2. large section of the earth's crust 3. a prolonged period without rainfall 5. where the dominant wind direction 7. the amount of water is not enough to meet the demand 10. when people vistit a natural environment and cause as little harm as possible 12. lines linking areas of pressure