¿Defina que es familia y cuantos tipos de familia existen en la sociedad actual?

Just do the math, then think

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.

No map. ie where is the map as this question cannot he answered without a map so the question as is is irrelevant and i am disappointed as i am a geologist.