Answer:
A. A passive continental margin is a transition between a continent and an oceanic plate, which has no significant seismic activity, volcanism, or mountain-building activity. An active continental margin, on the other hand, is a continental margin that coincides with a plate boundary and has significant geologic activity, such as earthquakes, volcanic eruptions, and mountain building.
B. Two structures you would find at a passive continental margin that you would not find at an active continental margin are a continental shelf and a continental slope.
C. These structures form as a result of the divergent plate boundary between the continent and oceanic plate. The continental shelf is an extension of the continent and is made up of sediment deposited by rivers and erosion. The continental slope is where the continental shelf drops off steeply into the oceanic crust.
D. One structure you would find at an active continental margin that you would not find at a passive continental margin is a subduction zone, where the oceanic plate is forced beneath the continental plate. This results in the formation of a deep oceanic trench and the release of significant amounts of energy in the form of earthquakes and volcanic eruptions.
Step-by-step explanation: