10. Which atmospheric layer is least dense? stratosphere
thermosphere
mesosphere
troposphere

NEEDDD THIS QUICK ITS DUE TOMORROW

an aneroid barometer is different from a mercury barometer in that it provides readings that increase as air pressure increases.

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the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.