What happens during the heat transfer within earth

Conduction, radiation and convection all play a role in moving heat between Earth's surface and the atmosphere. Since air is a poor conductor, most energy transfer by conduction occurs right near Earth's surface. ... During the day, sunlight heats the ground, which in turn heats the air directly above it via conduction!! (TY):D

answer; the above answer to the above statement is (true)

the index of refraction of the second medium is higher. i just took the test trust me !