Environment Crossword

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Across
  1. 4. To save electricity and reduce smoke, we can walk or ride a...
  2. 7. Vehicles like cars and motorbikes release bad... into the air.
  3. 10. The opposite of "dirty" when we clean up our environment.
  4. 11. We need to plant more green... to make our air fresh.
  5. 12. Thick black smoke from factories and heavy traffic causes air.
  6. 13. What big green area with many trees provides oxygen for Indonesia?
Down
  1. 1. When people throw trash into the water, the river becomes...
  2. 2. What should we do with our trash? Put it in the...
  3. 3. What electronic device should we unplug or turn off when we are not watching?
  4. 5. Cutting down too many trees in the forest causes...
  5. 6. When we turn off the lights and water when we don't use them, we... energy.
  6. 8. Material makes our rivers dirty and stays for a long time
  7. 9. Instead of using single-use plastic bottles, we should bring a...