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Questions Categorized as "Responses to Arguments Against the Science of Evolution"

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Does thermodynamics disprove evolution?

A common argument against biological evolution is that the theory contradicts the second law of thermodynamics.  The second law says that disorder, or entropy, always increases or stays the same over time.  How then can evolution produce more complex life forms over time?  The answer is that the second law is only valid in closed systems with no external sources of energy.  Since the Earth receives continual energy from the Sun, the second law does not apply.

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Isn’t the origin of life highly improbable?

From all we know about the state of the Earth 3 to 4 billion years ago and what we know about the complexity of the building blocks of life — DNA, RNA, amino acids, sugars — no entirely plausible hypothesis for the spontaneous origin of life has been found.  But this does not mean that supernatural activity is the only possible explanation.

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How can evolution account for the complexity of life on earth today?

A complex biological structure with many interacting parts might appear, at first glance, as if it were originally created in its present form with all its interlocking components fully formed and intact. It doesn’t seem possible that they developed step by step via biological evolution. In Darwin’s Black Box, Michael Behe introduces a term that he and other proponents of Intelligent Design use for this concept: irreducible complexity.

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Does the Cambrian Explosion pose a challenge to evolution?

The “Cambrian Explosion” refers to the appearance in the fossil record of most major animal body plans about 543 million years ago.  The new fossils appear in an interval of 20 million years or less.  On evolutionary time scales, 20 million years is a rapid burst that appears to be inconsistent with the gradual pace of evolutionary change.  However, rapid changes like this appear at other times in the fossil record, often following times of major extinction.  The Cambrian Explosion does present a number of interesting and important research questions.  It does not, however, challenge the fundamental correctness of the central thesis of evolution.

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