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For generations young New Yorkers have struggled with a juggling act: holding down jobs while trying to complete high school. Emily Berl, a photographer based in Brooklyn, focused her lens on several teenagers leading such double lives. Ms. Berl met teenagers with parents who do not have jobs, and others who support families back in their native countries.

One of those she followed was Osama Al-Mulaiki, 17, who opens a deli in Brooklyn before sunrise and returns after school to work into the night.