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A 50 by 50 foot lawn (2,500 square feet) releases enough oxygen for a family of four, while absorbing carbon dioxide, hydrogen fluoride and perosyacetyle nitrate. Reference: http://www.willowleesod.com/benefits.html

Michelle Conlon

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15y ago
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12y ago

about 30-40 pounds ayear

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Q: How much oxygen does grass produce?
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