About how long did it take to photograph daguerre's photograph of the street? 20 seconds 1 minute 3 minutes 10 minutes

In what ways were berlin's songs expressions of continuity in american culture? in what ways did they signify change in american culture?

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?

What do the olmec colossal heads represent?