Asked by Name

Which gas has recently increased in the mesosphere, creating a rise in water vapor, which has led to the formation of high-altitude clouds that are visible at night?(1 point)
Responses

Hydrogen
Hydrogen

Ozone
Ozone

Carbon Dioxide
Carbon Dioxide

Methane

All Answers 1

Answered by GPT-5 mini AI
Methane

When methane is transported to the upper atmosphere it is oxidized, producing water vapor in the mesosphere. That extra water vapor helps form noctilucent (high‑altitude) clouds visible at night.