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Across
An instrument that measures changes in air pressure without using liquid
The second-lowest layer of Earths atmosphere
The lower part of the thermosphere
A brownish haze that is a mixture of ozone and other chemicals
The outer layer of the thermosphere
The amount of mass of a substance in a given volume
Rain that contains more acid than normal
Down
An instrument that measures changes in air pressure consisting of a glass tube filled with mercury
The force exerted on a surface divided by the total area over which the force is exerted
The outermost layer of Earths atmoshpere
The lowest layer of the Earths atmosphere
Pressure caused by the weight of a column of air
The layer of Earths atmosphere immediately above the stratosphere
A harmful substance in the air, water, or soil
An instrument used to measure changes in air pressure