Geog-Set-4

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Across
  1. 6. holes in the protective layer in the earth's atmosphere
  2. 8. sump, wet, soft and spongy ground
  3. 11. Prime Meridian passes through the ________ in Greenwich, England
  4. 12. one of the fastest ways of communication
  5. 15. is a short woody plants, bushes
  6. 17. umbrella-like layer that allows very little sunlight to penetrate the lower layer
  7. 19. The action of building something, typically a large structure
  8. 20. mixed rainwater with pollutants in the air and comes down as ____
  9. 21. imaginary lines that run around the earth in north-south direction
Down
  1. 1. the longitude passes through 0 degree is known as _____
  2. 2. another name for highways in other countries
  3. 3. plantlife, greenery
  4. 4. a specific code consisting of dots and dashes
  5. 5. the longitude passes through 0 degree is known as _____
  6. 7. a large steep hill, having poor network of roads
  7. 8. Pollution harms our lungs and causes shortness of breath
  8. 9. the code used to for speaking to people living in other cities (long form)
  9. 10. topmost layer of the trees in tropical forests
  10. 13. areas of fairly level high ground, upland
  11. 14. the code used to for speaking to people living in other countries (short form)
  12. 16. Under the canopy is the dark layer called ______ layer
  13. 18. a chemical substance used for killing pests