Vaccinations were first used in the year 1796.
Answer:
"Continents of the World" is the Topic
Answer:
<em>Hi There the correct answer The main types of hearing loss are sorted into three categories: Sensorineural, conductive, or mixed. Sensorineural means there is a problem occurring in either the inner ear or the auditory nerve, which delivers sound to the brain.</em>
Hope it helps!
