Primary and Secondary coasts are very different by there natural formation. A primary coast is formed by the erosion of land.Secondary coasts are shaped mainly by marine erosion or deposition due to wave action, sediment transport by currents, or building activities of certain organisms and generally these coasts are older. The five major groups known as,salt wedge, flood,slightly stratified, vertically mixed, and fresh water. The first stage in the formation of a tectonic estuary is when the rapid movement of the Earth’s crust causes a large piece of land to sink, or subside, producing a depression or basin.The economy of many coastal areas relies on the natural beauty of estuaries. When those natural resources are imperiled, so are the livelihoods of the many people who live and work along the coast. As our population grows, the demands imposed on our natural resources increase and protecting these resources for all their natural, economic, and aesthetic values becomes even more important.I thought the assignment was very interesting seeing so many different sands from different places and seeing how similar some of them were.
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