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Q&A Can black algae promote a global warming on a cold planet?

My world is at the outer edge of the habitable zone. There is enough heat and geological activity to start life, but a snowball earth is looming and threatens to freeze it all. There is some spring...

3 answers  ·  posted 5y ago by Christmas Snow‭  ·  last activity 5y ago by Christmas Snow‭

Question climate flora climate-change ecology