One possible reason for the change in water clarity over time in the Gulf of Mexico could be an increase in pollution and runoff from urban development along the coast. As more cities and towns are built near the coast, there is a greater potential for contaminants such as sewage, chemicals, and fertilizers to enter the waterways, which can lead to decreased water clarity. Additionally, increased sedimentation from construction activities and erosion can also contribute to lower water clarity levels. The overall impact of these human activities on the marine environment can result in a degradation of water quality and clarity over time.
