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Base your answers to questions 1 on the photographs below and on your knowledge of Earth science. One photograph shows a digital device that recorded several weather variables. The second photograph shows two weather instruments, labeled A and B.
The barometric pressure was recorded on the digital device in millibars. What is the equivalent air pressure in inches of mercury (Hg)?*
Base your answers to questions 2 on the weather map below. The map shows isobars and seven weather station models. Four of the weather stations are identified by letters A, B, C, and D.
What was the probable air pressure, in millibars, at station D?*
What is the average air pressure exerted by Earth’s atmosphere at sea level, expressed in millibars and inches of mercury?*