Question

select all that apply
concentrations of which two atmospheric gases can vary significantly from one place to another?
ozone
water vapor
nitrogen
oxygen

Explanation:

• Ozone: Its concentration varies with altitude (higher in the stratosphere, lower in the troposphere in normal conditions) and due to human - made pollutants (e.g., ozone depletion in the stratosphere over Antarctica).
• Water vapor: It depends on temperature and proximity to water bodies. Warmer areas (like tropics) and areas near oceans have higher water - vapor concentrations compared to cold, arid regions.
• Nitrogen: Makes up about 78% of the atmosphere by volume and is relatively uniform globally.
• Oxygen: Comprises about 21% of the atmosphere by volume and is also relatively uniform globally (except in some very localized areas like inside a deep cave with no ventilation, but these are extreme and not the norm).

Answer:

ozone, water vapor