Q: Most of the heat that enters the mesosphere comes from where?


Read this paragraph and choose the correct option from the provided answers:

There are very few gas molecules in the mesosphere. This means that there is little matter to absorb the Sun’s rays and heat the air. Most of the heat that enters the mesosphere comes from the stratosphere below. That’s why the mesosphere is warmest at the bottom.

 Choices:

- Earth's surface

- Exosphere

- Troposphere

- the stratosphere


A:
the stratosphere