2. Earth's atmosphere contains a layer of that helps keep temperatures on Earth within a range that living organisms can survive.

Earth's atmosphere contains a layer of insulation that helps keep temperatures on Earth within a range that living organisms can survive.

Explanation:

Have a lovely rest of your day/night, and good luck with your assignments! ♡

I'm pretty sure it's insulation, I agree with the other guy who answered this.

Explanation:

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