Lakes that are characterized by high water clarity and low concentrations of dissolved nutrients are classified as

The water beneath the surfaces determent by how to waves are impact on nutrients

Answertropical depression;

When a lake, river or other aquatic  system  becomes  eutrophic, it can have serious negative effects on other organisms like fish, birds and even people.if an algal bloom is so bad that it causes wide-spread death  in  the  water, the organisms that die will all sink to the bottom and start to decompose.