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Evolution: Fact and Theory |
| Section: MODERN THOUGHT / THE DEBATE OVER ORIGINS: CREATIONISM OR EVOLUTION? |
| Author: Chris Colby |
| Publication: The world & I online |
| Issue Date: 1/1/1996 |
| Size: 4,888 Words, 31,654 Characters |
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Grant hypothesized that larger birds survived due to their larger beaks. Large beaked birds were better able to crush and eat large seeds once the supply of small seeds ran out. They had a higher probability of reaching reproductive age and therefore of leaving more offspring in the subsequent generation. If he was right, the change in the population was due to natural selection. Natural selection is one of the causes of evolution.
THE DEVELOPMENT OF EVOLUTIONARY BIOLOGY
The Galapagos Islands have played a large role in shaping evolutionary theory. Charles Darwin was struck by the fact that many bird niches on the island were filled by finches. A wider variety of birds filled the comparable number of niches on the mainland. The Galapagos finches were similar to but distinct from mai...
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... and distortions of scientific principles. These are not scientifically convincing but may be persuasive to the scientifically illiterate. Scientific creationists insist that belief in God is incompatible with evolution. However, most major religions around the world accept evolution as the scientific explanation of origins. And most reasonable people see no need for both beliefs to conflict.
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