Answer :
Final answer:
Active continental margins exhibit intense geological activity due to plate tectonics and subduction, resulting in unique features like trench formation and absence of continental rise.
Explanation:
Active continental margins are characterized by intense geological activity at the boundary between the continent and the ocean due to plate tectonics, such as subduction of oceanic crust beneath the continental crust.
In these regions, continental crust is subducting, leading to the formation of trenches and contributing to the narrowing shelves, steeper slopes, and lack of a continental rise.
These margins, like the Pacific coast of North America, display features distinct from passive margins, showing higher tectonic activity and more dynamic geological processes.
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