# Earth's Dynamic Atmosphere

Variations in air pressure are shown as _______ on surface weather maps.
A. geostrophic
B. barograph
C. topographical
D. isobars

my naswer is d.

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1. Yep.

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2. I guess but an isobar is a line along which the pressure is constant.

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3. Therefore the variation in pressure is high when the isobar lines are close to each other (expect wind)

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