Red Tides and Extensive Fish Kills are Caused by Population

Question

Red tides and extensive fish kills are caused by population blooms of ____.  
A) Euglena
B) specific dinoflagellates
C) diatoms
D) Plasmodium
E) fish

Accepted Answer

Red tides and fish kills are caused by population blooms of specific dinoflagellates, such as Karenia brevis or Alexandrium fundyense. These species produce toxins that can accumulate in shellfish and other marine organisms, leading to harmful effects on humans and wildlife that consume them.