Choose the correct heading for the paragraph from the list below.
A) The environmental impact of estuaries
B) The human impact on certain coastal areas
C) Why estuaries will disappear
An estuary is a partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries are amongst the most heavily populated areas throughout the world, with about 60% of the world’s population living along estuaries and the coast. As a result, estuaries are suffering degradation by many factors, including overgrazing and other poor farming practices; overfishing; drainage and filling of wetlands; pollutants from sewage inputs; and diking or damming for flood control or water diversion.