Question
Question 20 of 20 :
Select the best answer for the question.
Exosphere
Thermopause
Space shullle
Thermosphere
Auroras
Polar mesospheric clouds
(Noctiucent clouds)
Meteors
Mesopause
Mesosphere
Stratopause
Stratosphere
Troposphere
2. Tropopause
Polar stratosphere cloud
(Nacreous cloud)
« Commercial airliner
(image by The High Fin Sperm Whale (CC BY 3.0 (https//creativecommons.org/licenses/by/3.O/deed.en)
via Wikimedia Commons)
20. Look at the figure above. Which layer of the atmosphere holds the ozone layer?
O A. Mesosphere
O B. Stratosphere
O C. Thermosphere
O. D. Troposphere
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