Which Atmosphere term is correctly associated with key feature: “it contains some of the coldest atmospheric temperatures”, and also with “many meteors burn up in it”?

Correct Answer: Option C — Mesosphere. Mesosphere is correct because it is it contains some of the coldest atmospheric temperatures. Mesosphere is also associated with many meteors burn up in it. A further identifying fact is that Mesosphere is it contains some of the coldest atmospheric temperatures. Another useful fact is that Mesosphere is associated with many meteors burn up in it. Why the other options are incorrect: Option A — Thermosphere: It is temperature rises greatly as high-energy radiation is absorbed and is associated with auroras occur mainly in this region; those are the identifying facts of Thermosphere. Option B — Exosphere: It is particles are extremely sparse and is associated with light gases such as hydrogen and helium dominate; those are the identifying facts of Exosphere. Option D — Ozone layer: It is absorbs much of the Sun's harmful ultraviolet radiation and is associated with its depletion increases surface UV exposure; those are the identifying facts of Ozone layer. Exam Takeaway: Link Mesosphere with “it contains some of the coldest atmospheric temperatures” and “many meteors burn up in it” for quick revision.