What happens to air pressure and the amount of oxygen as the altitude increases in Earth’s atmosphere?

Question

What happens to air pressure and the amount of oxygen as the altitude increases in Earth’s atmosphere?

• Both air pressure and the amount of oxygen decrease.
• Air pressure increases, while the amount of oxygen decreases.
• Both air pressure and the amount of oxygen increase.
• Air pressure decreases, while the amount of oxygen increases.

Answer 1

Air pressure decreases, while the amount of oxygen decreases.

Answer 2

What happens to air pressure and the amount of oxygen as the altitude increases in Earth’s atmosphere?

Air pressure decreases, while the amount of oxygen decreases.

The correct answer is: Both air pressure and the amount of oxygen decrease as the altitude increases in Earth's atmosphere.