Contrary to what some people belief, natural selection does not serve a higher purpose: it is a natural process that does not require guidance to occur.
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Natural selection does not have an ultimate goal or form, but changes according to the environment. Since the environment is always changing, natural selection is an ongoing process. Whether or not changes have been guided by God or have been allowed to proceed naturally as a part of the creation is not something that science can currently measure.
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It only requires variation and the ability to change.