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Search options not deleted user 21862

For questions about the long-term change of a specific species, type of creature, or trait, usually through the process of natural selection and reproduction. Ideal questions focus on traits, not entire creatures. Consider also [creature-design].

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Two orbits, Four habitable planets in the goldilocks zone?

I think you would be best having multiple planets that are gravitationally locked with one another as in a planet/moon system. A prime example would be Pluto and its moons (largest Charon). Charon i …
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