faithomar050117
faithomar050117 faithomar050117
  • 30-01-2018
  • Biology
contestada

Explain two ways helpful bacteria work to keep you healthy.

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frozenkarma06
frozenkarma06 frozenkarma06
  • 30-01-2018
it helps our blood stream 
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lae3 lae3
  • 30-01-2018
They help kill viruses.
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