1. Identify the layer of the atmosphere that is constantly being hit by photons, has very low pressure, and temperatures that decrease from 120° Celsius to -80° Celsius as you move down through the layer.

Mesosphere

Explanation:

The Mesosphere is a layer of the atmosphere that is above the Stratosphere and below the Thermosphere. This is the third layer of the atmosphere. Some of its characteristics include;

1. It is constantly being hit by photons: These photons are in the form of meteors that constantly hit this layer of the atmosphere.  Meteors which are particles of dust release light energy that makes them visible to the human eyes as shooting stars.

2. The layer is characterized by very low pressure. This makes the air here thin and as the altitude increases, the air becomes very cold.

3. Temperatures decrease from 120° Celsius to -80° Celsius as you move down through the layer: The temperature in this layer decreases as the altitude increases.

answer; i believe its (ovulation);