172k views
0 votes
Which substance is used in a sewage treatment system to kill harmful bacteria? *

ammonia
chlorine
sand
soap

1 Answer

3 votes
the answer is chlorine
User Tenshi Munasinghe
by
7.9k points

Related questions

asked Jan 21, 2018 125k views
Teddy asked Jan 21, 2018
by Teddy
8.0k points
1 answer
4 votes
125k views