Question

Question
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

Methane
Methane

Ozone
Ozone

Carbon Dioxide

Answer 1

The gas that has recently increased in the mesosphere, creating a rise in water vapor which has led to the formation of high-altitude clouds visible at night, is **Methane**.