Answer:
Air pressure is the weight of the atmosphere pressing down on the earth. It is measured by a barometer in units called millibars. Most barometers use mercury in a glass column, like a thermometer, to measure the change in air pressure.
Explanation:
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Answer:
C. High-tech.
Explanation:
High-tech can be defined as the use of the latest or most advanced technology. High-tech is simply a short word for high technology and it comprises of a cutting edge or frontier technology by virtue of the use of the latest or most advanced technology available to users.
This ultimately implies that, a high technology (High-tech) typically involves the process of using complex computer systems, electronics or tools that are considered to be the latest or most advanced in the technology industry.
<em>Some examples of high-tech products are smart televisions, capsule endoscopy, smartphones, electric cars, etc. </em>
The answer is b he is present in abstract form