Need
in 3-5 sentences, construct an argument for why beach nourishment is or is not a viable strategy to manage beach erosion.

Beach nourishment is a viable strategy to manage beach erosion.

Explanation:

Beach erosion takes away large volumes of sand from the beach. To preserve the natural state of beaches and reduce the effect of beach erosion the method of beach erosion is used. In this sand is mechanically placed on the beaches to compensate for the sediment loss by erosion.  

This method provides a sacrificial sand zone that faces erosion.  The method of beach nourishment widens the beach area and thus increases recreational space. In some cases this even provides habitat to endangered species.  

i think the answer is a.keratin is the pigment responsible for skin color.