Answers

2015-09-01T06:27:43+08:00
Cause : it could be the smoke in a factory, smoke from vehicles and smoke from cigarettes.
Effects: It might affect a certain persons lungs
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2015-09-02T16:53:41+08:00
CAUSES:
Burning of Fossil Fuels
Agricultural activities
Exhaust from factories and industries
Mining operations
Indoor air pollution

EFFECTS:
Respiratory and heart problems
Global warming
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