In higher latitudes where lakes freeze over in winter, how do cool autumn temperatures help fish make it through the winter?

The cooling water slows fish metabolisms down and allows them to go into hibernation in winter.

Water from the bottom of the lake raises and provides oxygen to the cooler waters on the surface.

Cool water at the surface traps nutrients deep in the lake to provide food during the winter.

The water in contact with the air sinks and mixes with the less oxygenated water in the deeper levels.

@wolfe8 @mahone331

Question

In higher latitudes where lakes freeze over in winter, how do cool autumn temperatures help fish make it through the winter? 

 The cooling water slows fish metabolisms down and allows them to go into hibernation in winter. 

 Water from the bottom of the lake raises and provides oxygen to the cooler waters on the surface. 

 Cool water at the surface traps nutrients deep in the lake to provide food during the winter. 

 The water in contact with the air sinks and mixes with the less oxygenated water in the deeper levels. 

@wolfe8 @mahone331

wolfe8 · Answer

I'm thinking A but it sounds kinda too simple

anonymous · Answer

im pretty sure its B.

wolfe8 · Answer

Well I thought B and D are similar, and cold doesn't rise, hot does.

anonymous · Answer

yes, but i dont think that the fish hibernate in winter

wolfe8 · Answer

Lol do fish even hibernate?

anonymous · Answer

thats wat i thought, and i dont think they do

wolfe8 · Answer

Then I will go for D since cold sinks and hot rises

anonymous · Answer

true

wolfe8 · Answer

@petiteme Epic

anonymous · Answer

"The more oxygenated surface water mixes with the less oxygenated levels below it. " I found this is my Biology text book, so the answer is D