Hey hey it your old friend

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?

Which does the author mean by " nature had to kindle all the fires, for man by his own effort was unable to produce a spark

According to the hierarchy of chords, fill in the missing chord in this progression. i - iv - - i?