Question

well start in northern europe. what is the large scale feature shown here just off the eastern coast that also surrounds iceland and the uk? a continental shelf an oceanic plateau a trench right. and this wide shelf tells us that this is a passive continental margin. classify continental margins. 5 of 5 lets look at a very different coastline, and notice the width of the continental shelf here. what type of margin is located off the western coast of south america? a passive continental margin an active continental margin

Explanation:

First Question (About the feature around Iceland and UK)

The large marine feature around Iceland and the UK, off the European coast, is a continental shelf. Continental shelves are shallow, submerged parts of continents, and the North Sea and areas around these regions have broad continental shelves. Oceanic plateaus are deep - sea flat areas, and trenches are deep, narrow depressions (like subduction zones), which don't match this area.

The western coast of South America has an active continental margin. Active margins are associated with plate boundaries (like subduction zones, where the Nazca Plate subducts under the South American Plate), have narrow continental shelves, and are sites of volcanic activity, earthquakes, etc. Passive margins have wide shelves and no active plate interactions, which doesn't fit the western South American coast.

Answer:

A. A continental shelf

Second Question (Margin off western coast of South America)