Question

which layer is the hottest layer of the atmosphere?
mesosphere
thermosphere
troposphere
stratosphere

Explanation:

The thermosphere is the layer of the atmosphere where temperatures can be extremely high due to the absorption of high - energy solar radiation. In the thermosphere, atoms and molecules are ionized by solar radiation, and the kinetic energy of the gas particles (which is related to temperature) can be very large. The mesosphere is actually the coldest layer in the atmosphere. The troposphere is where we live, and its temperature generally decreases with altitude. The stratosphere has a temperature increase due to the ozone layer absorbing UV radiation, but it is not as hot as the thermosphere.

Answer:

Thermosphere