The Earth's atmosphere is a mixture of gases that surround the planet. It's divided into 5 different layers that have unique characteristics extending from Earth's surface all the way to space. With regards to the gases found in the atmosphere, what is the approximate composition of these gases?

Question 2 options:

The Earth's atmospheric layers are a mixture of approximately 78% water vapor, 21% oxygen, and 1% nitrogen and other gases.

The Earth's atmospheric layers are a mixture of approximately 78% nitrogen, 21% oxygen, and 1% water vapor and other gases.

The Earth's atmospheric layers are a mixture of approximately 78% oxygen, 21% nitrogen, and 1% water vapor and other gases.

The Earth's atmospheric layers are a mixture of approximately 78% nitrogen, 21% water vapor, and 1% oxygen and other gases.

The Earth's atmospheric layers are a mixture of approximately 78% nitrogen, 21% oxygen, and 1% water vapor and other gases.