Answer:
high frequency sound waves
Explanation:
The fetal cardiac activity emits signal that comprises of high frequency sound waves. This signal is received only when it is converted into a fetal heart rate tracing via computer. These signals are traced through transducers and are shown on the external monitor.
Answer:
C. two people arguing on a secluded park bench
Explanation:
Answer:
we can reduce the risk of developing CVD is by-
1.keep your cholesterol and triglyceride levels under control.
2.control your blood pressure
3.stay at a healthy weight.
4.don't smoke
5.eat a healthy diet.
Hi !
<em>Name the 3 pollutants that have decreased the most since the 1990</em>
Answer:
<em>- lead, </em>
<em>- sulfur dioxide (SO2) </em>
<em>- oxides of nitrogen (NOx).</em>
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.
