play an upbeat music set the volume to the substance level that is chlorine a for you record it in your data sheet like the one shown below copied the to the table use thumbs up for tolerable ok you thumbs down for intolerable not ok volume level 123456 tolerance level
Answers & Comments
Answer:
1.thumbs up
2.thumbs up
3.thumbs up
4.thumbs up
5.thumbs down
6.thumbs down
Explanation:
Hope it helps