Which of these protects earth from harmful radiation when in the stratosphere but is a pollutant at lower altitudes? carbon oxygen ozone hydrogen

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.

is this what u needed? if not i can see what i can do

they were destroyed coming out of the civil war but after he war they were booming. if you need an in-depth answer follow up with me  

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