How long would would it take algae to spread through the sea
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Our intrepid interstellar crew arrive in a new solar system. The find a planet in the Goldilocks zone. However the planet has no life, but is otherwise earth like*. The atmosphere is 80% nitrogen, 20% carbon dioxide. Give or take.
If the crew were to drop say 50 canisters of 1kg of algae in to the seas:
- How long would the algae take to spread through the whole planet's sea?
- How long to convert the atmosphere to be breathable?
*For argument sake, it is the exactly same as earth; apart from no life and consequently a different atmosphere. (Unless there is a good or interesting reason why it would be different)
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