What type of system is associated with weather that is cold but sunny with almost no clouds in the sky?

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.

His main goal was  the modernization and westernization of turkey