I need help with this Biology Question..... Best answer gets 10 points?

  • Thread starter Thread starter Miss.Dreamer. ™♥
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Miss.Dreamer. ™♥

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Here's the question:
The process of natural selection throughout the history of life on Earth has resulted in the success of some species and the extinction of other species. Why has natural selection not resulted in the existence of a single best-adapted species?

Natural Selection:
In the process of natural selection, organisms best suited to their environment reproduce more successfully than other organisms.
 
Because the earth does not consist of a single environment but, rather, many different environments - each with it's own characteristics. The "best suited" organism for a desert environment, for example, would be ill suited for an artic environment. Likewise, an aquatic organism best suited for an ocean (salt water) environment would be ill suited for a fresh water environment.
 
The environment is suited for many species. If the environment had 90C temperature all year long, then probably only certain bacteria would survive. But the environment is not so extreme that only a few species can survive in it. Change your name from "miss failure" to something positive.
 
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