C Both air pressure and the amount of oxygen decreases
As altitude increases in Earth's atmosphere, the air pressure decreases because there is less air above pushing down. As a result, the amount of oxygen available also decreases because the concentration of gases in the atmosphere decreases at higher altitudes.
What happens to air pressure in the amount of oxygen as the altitude increases in earths atmosphere?
A Air pressure increases while the amount of oxygen decreases
B Air pressure and the amount of oxygen increases
C Both air pressure and the amount of oxygen decreases
D Air pressure decreases the amount of oxygen increases
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