Home > Term: Jordan's Rule
In general, closely related species do not have identical ranges, but often their ranges are not very far apart. They are usually adjacent but separated by some kind of a geographic barrier, such as a mountain, desert, or river. A second Jordan's Rule is: fishes develop more vertebrae in cold environments than in warm ones.
- Part of Speech: noun
- Industry/Domain: Natural environment
- Category: Coral reefs
- Organization: NOAA
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- Grpu76
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