Question

concentrations of which two atmospheric gases can vary significantly from one place to another?

nitrogen

water vapor

oxygen

ozone

Explanation:

• Water vapor: Its concentration varies due to factors like temperature (warmer air can hold more water vapor) and proximity to water bodies (e.g., higher over oceans, lakes).
• Ozone: In the stratosphere, it forms the ozone layer. Near the ground, its concentration can vary due to pollution (e.g., from vehicle emissions reacting in sunlight) and in different altitudes (stratospheric ozone is at a different altitude - range compared to tropospheric ozone).
• Nitrogen and oxygen have relatively stable concentrations in the atmosphere (nitrogen is about 78%, oxygen about 21% in the troposphere under normal - non - polluted conditions).

Answer:

water vapor, ozone