Sun rays= what are they made out of and earth's sky what is it made out of? and the layers too what are they made out of?

What materials were commonly used to make each type of art during this period

Which sculpture was made using the flattened relief technique of carving an extremely shallow scene

In this unit, it is mentioned that in order to enter into the field of photography, most jobs require at least a high school degree. since there is a possibility you can attain one of these jobs with just finishing high school, why do some people get an associates or bachelor’s degree?