Ask A Scientist Zoology Archive

name         Kia B.
age          16

Question -   What factors other the supply of oxygen, determine 
the survival of fish in a lake that is frozen over?
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Other environmental factors, like food supply, predators, etc. are at work 
winter as well as summer, but oxygen levels are the single prominent 
factor that is unique to the lake ecosystem when ice covered.
J. Elliott
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