Audiologist.it is very useful deaf people education.. Audiology mainly mechanism sounds and music instruments
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i am doing this for points only
Answer: A primary positive effect of the Columbian Exchange is increased food supply of both the Old World and the New World. Various crops such as wheat, barley, and rye, were introduced by Columbus and his followers.
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In the post test only design
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A Teapot
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Treatment would also work
