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.
Travelers maybe? Visitors
The diaphragm divides the ventral cavity into two parts by separating the thoracic cavity and the abdominal cavity. It is a flat muscular sheet that is bounded by the chest wall, and an inferior abdominopelvic <span>cavity. </span><span>I hope my answer has come to your help. God bless and have a nice day ahead!</span><span>
</span>
