I drew these randomly yesterday

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?

Performer emphasizes a tone by playing it more loudly than the tones around it is called?

When you shoot using the lowest number possible for your aperture what is it called