What protects humans and other organisms from

excess UV radiation?

What layer does weather occur in?

This layer blends in with outer space

This layer protects living things from UV radiation

What layer do we live in?

Compounds in Earth's atmosphere can change with time and location

Which layer contains the Aurora Borealis?

Analyze the following chart. Which TWO layers get cooler as altitude increases?

Which layer of the atmosphere contains the highest concentration of ozone?

What is the primary component of Earth's atmosphere?

In which layer of the atmosphere does the temperature increase with altitude?

Which layer of the atmosphere is known for containing the ionosphere, which reflects radio waves?

What is the approximate percentage of carbon dioxide in Earth's atmosphere?

Which atmospheric layer is directly above the troposphere?