Choose the correct answer.
What happens when harmful things get into the air?
That's Correct!
It's Wrong!
When harmful things get into the air, it becomes polluted. This is called air pollution.
Causes of air pollution are car engines, factories, and smoke.
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Key Data
Questions
37
Grade
1, 2
Theme
Earth & Its Resources
Passing score
80%
Progress
8
Incorrect
10
Correct
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37