-- card: 9785 from stack: in
-- bmap block id: 10009
-- flags: 0000
-- background id: 2723
-- name: 


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0

-- part contents for background part 17
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0

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If the air pressure increases
the Hg level will

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Climb higher

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Remain at 760 mm

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Drop lower

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Vary to show changes in T

-- part contents for background part 1
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1

-- part contents for background part 18
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CORRECT!