Transportation

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Across
  1. 5. cars are one of the ways of _________.
  2. 6. car releases greenhouse gas by burning fossil ____ from their engine.
  3. 7. cars are one of the reasons why the earth is becoming ______.
Down
  1. 1. what gas do car release?
  2. 2. What is one of the public transportation that you can use?
  3. 3. What is a way to go somewhere using no bikes and vehicles?
  4. 4. Transport is another word for?