How has Africa adapted to the challenges it faces?

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Across
  1. 4. A prolonged period without rain
  2. 8. Travel supporting conservation
  3. 10. Energy that can replenish naturally
  4. 11. The practice of farming
  5. 14. Creating forests on barren land
  6. 15. Reusing materials for higher-value products
Down
  1. 1. Cutting down trees without replanting
  2. 2. A grassy African ecosystem
  3. 3. Energy from water
  4. 5. A system supporting fair producer wages
  5. 6. Meeting today’s needs without harming the future
  6. 7. Fertile land turning into desert
  7. 9. Turning waste into reusable material
  8. 12. Variety of life in an ecosystem
  9. 13. An element released by burning fuels