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Answer with explanation; I searched it up :)
Answer:
A unit of measurement of atmospheric pressure equal to one millibar. It is named after the French mathematician Blaise Pascal. A hectopascal is equal to 100 pascals and 14.503 × 10−5 (0.00014503) psi. Some altimeter Kollsman window settings are indicated in hectopascals, as well as in inches and millimeters.
Explanation: Hope this helps:)
Answer: They can help keep you from getting distracted while you're driving, they can act as a second eye to look for any potential dangers, and they can switch places with you if needed.
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