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.
Antisocial behavior, risk taking behavior, impassivity and aggression
The four emergencies an office should be equipped to handle are: Sudden Cardiac Arrest, Seizures, asthma attacks and allergic reactions.
Natural emergencies are emergencies such as symptoms of a disease or sickness, whereas a man-made one is something like trauma such as a car accident or burns.
