Of the four most abundant gases in our atmosphere, which one shows the greatest variation from place to place at the earth's surface

Water Vapor

Explanation:

Water Vapor is the third most abundant gas in the atmosphere but shows the greatest variation because in some places it could be so low that it is practically 0% but in other areas it can get up to 4%.

This is because there are areas where it is more conducive for water vapor to exist and places it isn't. For instance, there will be a lot of water vapor in tropical climates where rainfall is abundant as opposed to deserts where temperatures are too high and rainfall too low for rain to come.

i am a little confused myself with what goes with the letters and what goes with the numbers but ill do my best to you

the cordillera states and grand canyon are along the southwest u.s. and northern mexican pacific.

the great plains and southwest desert are also the prairie and home to many earthquakes too .

the coastal plains have poor soil and many factories started in the south.

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