Question

Select all that apply

What are the two boundaries (upper and lower) of Earth's atmosphere? (Select two).
a. The top of Earth's mantle
b. Earth's surface
c. The stratopause
d. The gradational transition into space
e. The top of the troposphere

Answer 1

• Explanation:The lower boundary of the stratosphere is called the tropopause; the upper boundary is called the stratopause. Ozone, an unusual type of oxygen molecule that is relatively abundant in the stratosphere, heats this layer as it absorbs energy from incoming ultraviolet radiation from the Sun.