9 miles from east to west
We can say that these theories are human constructions.
These theories were constructed, or created by humans, which makes them human constructions. They didn't exist before humans made them - they weren't previously part of nature around us. Rather we created them to suit our own needs and to make us understand life in general.
One day i just felt like running
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Answer:
This statement is true.
Explanation:
The ultrasound gel is a conductive medium, meaning it helps create a bond between the<em> transducer and the skin. </em>
Ultrasound waves cannot travel well enough through the air which is why the gel is applied in order to reduce air space between the skin and transducer, thus allowing a good quality image to be developed.