12550287 12550287

09-12-2020
Biology

contestada

Which substance is used in a sewage treatment system to kill harmful bacteria? *

ammonia
chlorine
sand
soap

Respuesta :

alexyeet098 alexyeet098

09-12-2020

the answer is chlorine

Answer Link

maranda66 maranda66

09-12-2020

Answer:

It's chlorine

Explanation:

Answer Link

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