http://www.sciencemag.org/cgi/content/fu... 75% 9 Votes
Other Answers (2)
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Not an official theory ,here smine .Why dont we see humans having different looks like living in different cities in the same country ,it is a different environment .
Creatures adapt faster than we do ,they are more prone to mutations than we are .Adapt in the way of nucleic acid ,we have the ultimate adaptation of adaptations IMAGINATIONS .
For those without ,they take in more of their environment than they can .Species are only the start of change ,we let them live like this longer and the change becomes more apparent . 17% 2 Votes -
That depends on what you mean. If you%26#039;re asking why there is diversity within a species, consider your own family. You resemble your parents but are not an exact copy of either one. You get genes from each parent and the combination determines what you look like. Everybody (except identical twins, triplets, etc) differs. The same holds true for other higher opganisms.
If you are asking about the benefits of having a diversity of species, it%26#039;s like having several souces of income. If one drops, others are likely to pick up the slack. Similarly, the more complex the community, the more stable it is. 8% 1 Vote