ANSWERS: 1
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Paper napkins do break down in landfills, but the process takes longer than it would for napkins that are, for example, left on the ground after a picnic. In a landfill. microbial decomposition doesn't happen as quickly. Paper napkins will decompose in 2 to 4 weeks, and possibly longer.
Source:
Laurence Journal World & News: Break it Down: How Long Does it Take Trash to Degrade?
Forecast Earth: In a Landfill, How Long Does Trash Really Last?
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