Question

which atmospheric layer is where earths northern and southern lights occur?
mesosphere
stratosphere
thermosphere
troposphere

Explanation:

Northern (Aurora Borealis) and southern (Aurora Australis) lights form when charged solar particles interact with Earth's magnetic field and collide with gas molecules in the upper atmosphere. This interaction takes place in the thermosphere, which is the highest atmospheric layer where such particle collisions produce the visible light displays.

Answer:

thermosphere