Water Pollution

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Across
  1. 3. we should not ----- in lakes with soaps
  2. 6. we should not wash ------ in lakes
  3. 9. we build ----- water harvesting
  4. 10. ------ first comes in existence of water
Down
  1. 1. we shouldn't ----- the animals in lakes
  2. 2. we should not throw. In water
  3. 4. we should not waste
  4. 5. we should drink ------ water
  5. 7. we should ------ water in lakes and ponds
  6. 8. Build ----- across the river