Spider webs don't rot easily and scientists may have figured out why

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Spider silk doesn’t rot quickly because bacteria can’t access its nitrogen, a nutrient needed for the microbes’ growth, scientists say.
Spider webs don't rot easily and scientists may have figured out why
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Spider webs don't rot easily and scientists may have figured out why
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Spider webs don't rot easily and scientists may have figured out why
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Spider webs don't rot easily and scientists may have figured out why
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Spider webs don't rot easily and scientists may have figured out why
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Spider webs don't rot easily and scientists may have figured out why
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Spider webs don't rot easily and scientists may have figured out why
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Spider webs don't rot easily and scientists may have figured out why
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Spider webs don't rot easily and scientists may have figured out why
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