Question

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

Explanation:

The northern and southern lights (auroras) occur in the thermosphere. This layer is ionized by solar radiation, and the interaction of charged particles (from the sun) with atoms and molecules in the thermosphere causes the light displays. The mesosphere is mainly known for meteor burning up. The stratosphere has the ozone layer. The troposphere is where weather occurs.

Answer:

thermosphere