A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton. Suggest a reason for the fish kill.

A large number of fish are suddenly found floating dead on a lake. The

1.	A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton. Suggest a reason for the fish kill.
Answer» <html><body><p></p>Solution :Phytoplankton <a href="https://interviewquestions.tuteehub.com/tag/consists-930075" style="font-weight:bold;" target="_blank" title="Click to know more about CONSISTS">CONSISTS</a> of organic contaminants such as grass leaves <a href="https://interviewquestions.tuteehub.com/tag/etc-975753" style="font-weight:bold;" target="_blank" title="Click to know more about ETC">ETC</a>. In water these materials are <a href="https://interviewquestions.tuteehub.com/tag/degraded-7375258" style="font-weight:bold;" target="_blank" title="Click to know more about DEGRADED">DEGRADED</a> by <a href="https://interviewquestions.tuteehub.com/tag/bacteria-16728" style="font-weight:bold;" target="_blank" title="Click to know more about BACTERIA">BACTERIA</a> and a large amount of dissolved oxygen will be used up for this process. As the amount of DO drops below 6 ppm, fish cannot <a href="https://interviewquestions.tuteehub.com/tag/survive-1236049" style="font-weight:bold;" target="_blank" title="Click to know more about SURVIVE">SURVIVE</a> and they float dead.</body></html>