A lot of noise than necessary, causing effects that harm the hearing system of teaching and learning can be very disturbing.Too much louder than necessary until it produces effects which are harmful to the system of hearing of participants, and it is very disturbing to learn.Excessive noise than necessary and cause various adverse effects. Which is harmful to the hearing system of learners and learning very unobtrusive.The sound too much more than is necessary to cause a loss. Which is harmful to the auditory system of students and interferes with learning greatly.
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