Answer:
"Deposition of sediments on shorelines" on shorelines is responsible for "eutrophication" in seawater.
Step-by-step explanation:
- The natural process of the addition of nutritional elements to the water is called Eutrophication.
- The sediments carried by the rivers and streams flowing into the sea get deposited on the shoreline as these rivers and streams lose the strength to carry these sediments further.
- These sediments are rich in nutritional elements like Phosphorous and Nitrogen. The presence of these elements stimulates the growth of algae to a great extent.