The Crust has the most oxygen in it
Outside your window, and with an Internet search for "atmospheric layers". The answer is the "troposphere". That's the lowest layer where most of the air is.
Your mom made the earths layers
Asthenosphere
there are 7 layers in earths mantle.
Most of earth's volume has been scientifically proved to be in the earth's mantle.
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nitrogen is the most common element in the earths atmosphere
the crust
No
Bdjxd
the crust
Layers.