Question

how much of the sunlight entering earths atmosphere eventually leaves? all of it none of it

Explanation:

Based on the principles of energy balance in Earth's climate system, over the long - term, the amount of energy (including sunlight) entering the Earth's atmosphere must equal the amount leaving to maintain a stable climate. So, all the sunlight (in the form of various types of radiation after interactions within the Earth - atmosphere system) eventually leaves.

Answer:

All of it