Final answer:
The mesosphere is the layer of the atmosphere where meteoroids burn up and experience a reduction in temperature.
Step-by-step explanation:
The layer of the atmosphere where meteoroids burn up and experience a reduction in temperature is called the mesosphere. When meteoroids enter the Earth's atmosphere, they collide with gas particles and heat up due to friction, causing them to glow and burn up. The mesosphere is the layer located above the stratosphere and below the thermosphere, and it is characterized by low temperatures and thin air.