Software development. A software developer designs and creates tech which can be used for multiple purposes, both creative, practical and for entertainment purposes. A digital music manager would fall into the category of being some software in which a user could develop a method to manage music.
Background images can be used as visuals for visual learners. You can really use them to your advantage and really use them to explain your point. Say your talking about deforestation, you could put up a picture of a beautiful jungle and a picture of a deforested jungle to prove your point
Mount saint helen is an active stratovolcano and it was formed due to the subduction of the Juan de fuca plate.
