Which Atmosphere term is correctly associated with weather or climate role: “its depletion increases surface UV exposure”, and also with “a region of enhanced ozone concentration”?

Correct Answer: Option D — Ozone layer. Ozone layer is correct because it is its depletion increases surface UV exposure. Ozone layer is also associated with a region of enhanced ozone concentration. A further identifying fact is that Ozone layer is absorbs much of the Sun's harmful ultraviolet radiation. Another useful fact is that Ozone layer is associated with its depletion increases surface UV exposure. Why the other options are incorrect: Option A — Jet stream: It is it strongly influences weather systems and aviation routes and is associated with a narrow band of very fast upper-level winds; those are the identifying facts of Jet stream. Option B — Trade winds: It is help drive tropical ocean currents and is associated with persistent tropical easterly winds; those are the identifying facts of Trade winds. Option C — Westerlies: It is steer many temperate cyclones and is associated with prevailing mid-latitude winds; those are the identifying facts of Westerlies. Exam Takeaway: Link Ozone layer with “its depletion increases surface UV exposure” and “a region of enhanced ozone concentration” for quick revision.