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The methods you can use to make the air heathier.

2006-11-10 22:29:03 · 2 answers · asked by tia 1 in Environment

2 answers

hepa filters
ionic filters

2006-11-10 22:55:56 · answer #1 · answered by Anonymous · 1 0

Hepa Filters and Activated Carbon filters

2006-11-11 20:09:53 · answer #2 · answered by Rossghjr 3 · 0 0

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