Why can't we see in the dark like other creatures of the dark do?
I know the reason lies in the special layer found in cats' eyes called tapetum lucidum which acts like mirror.
But, what led to the formation of this layer? Did it come as an adaptation to living in the dark?
Or, were they primarily "designed" to live and hunt in the dark?
If our cavemen ancestors weren't afraid of the dark and the hunting cats; and had they ventured in the dark more often.... Would it have helped us to gain a better "night vision"?
Why must we sleep at nights? I guess, in the earlier times it was because there was a danger of the big cats and wolves... Now what?
I hope you enjoy answering... please do!
(I had to "dumb down" the title of this question due to Answers' character limit. Extremely sorry for that.)
2006-09-02
09:23:35
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12 answers
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asked by
Abhyudaya
6