Hey there!
Bronchitis is a disease that caused the bronchioles to inflammate which makes breathing difficult.
Bronchitis is often started by a virus, and usually occurs after you've had a cold or flu. It can cause breathing and coughing problems but improves and heals itself.
Hope this helps!
Answer:
A. you need an income below a certain amount.
Explanation:
Answer:
Cleaning.
Explanation:
Ultrasound are the high sound waves that has the frequency above than 20kHz. The ultrsonic sound can be detected by animals like bats and has medical importance as well.
The cleaning of the medical instruments and machines are done by ultrasonic cleaners. These cleaners uses the ultrasonic waves to clean the dirt and needs a proper solvent medium for cleaning. The cavitation bubbles are produced that are used for cleaning.
Thus, the correct answer is cleaning.
