3 minute speech:Topic: How to keep our air pure?
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10 Easy Steps for Cleaner Air
Walk, bike, carpool, or take public transit.
Reduce heating needs by making your house more energy efficient. ...
Say no to wood fire burning.
Use hand-powered or battery-operated garden tools. ...
Know before you go. ...
Check your tire pressure. ...
Reduce, reuse, and recycle!
Be idle-free.
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