Tagged Questions
7
votes
1answer
279 views
Disadvantages of unihemispheric sleep
Is is well known fact that marine mammals and some birds can sleep with one brain hemisphere at a time, since it's essential for their survival.
However, at least in my opinion, such mechanism would ...
32
votes
3answers
755 views
Why did the process of sleep evolve in many animals? What is its evolutionary advantage?
The process of sleep seems to be very disadvantageous to an organism as it is extremely vulnerable to predation for several hours at a time. Why is sleep necessary in so many animals? What advantage ...
