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schepotkina [342]
3 years ago
7

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

Biology
1 answer:
slava [35]3 years ago
4 0
The answer to that is, Chlorine
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_______ part of our brain generates signals for involuntary action.​
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the brain stem

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the structures of our brain stem, in conjunction with our spinal cord (not a part of our brain) is responsible for involuntary action. Not sure if it generate signals, but hey it's better than no answer.

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2 years ago
Is hypertonic active or passive transport
Len [333]

I'm a little confused by this question. Hypertonic just means that something has more of something than another thing. For example, if you place a cell in a solution, and 2% of the cell is made out of something while the solution is made out of 40% of the same thing, the solution would be hypertonic to the cell. Sorry if that explanation doesn't make sense, I tried my best lol.

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