These represent the number of pieces of plastic put in the ocean every hour. Jordan's piece is meant to make viewers think about their plastic consumption, and how this affects the world at large. By showing how much plastic enters the ocean (merely per hour), this ecological problem becomes tangible and personal, and hopefully effects change.
Music and culture are interrelated because music can be considered the "language" of a culture. Music has been known to connect people for generations and has been known as a form of telling stories.
Line conventions............lines can only be thick or thin. Thick is 0.6mm and thin is 0.3mm.