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  • 14-05-2020
  • Biology
contestada

Which first-line defense system uses acids to kill pathogens?
O
A. circulatory
OB. digestive
O c. nervous
OD. respiratory



ASAP ASAP ASPA

Respuesta :

ic0nicsunday
ic0nicsunday ic0nicsunday
  • 14-05-2020
I think it’s respiratory but I’m not sure
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