<P> Economically , the continental shelf is the most economically valuable part of the ocean . It often is the most productive portion of the continental margin , as well as the most studied portion , due to its relatively shallow , accessible depths . </P>
<P> Economically , the continental shelf is the most economically valuable part of the ocean . It often is the most productive portion of the continental margin , as well as the most studied portion , due to its relatively shallow , accessible depths . </P>
which component of the continental margin has the greatest economic and political significance
which component of the continental margin has the greatest economic and political significance
the continental shelf
the continental shelf