I know that a greenhouse is not air tight so I imagine it breathes somewhat and exchanges gas with the outside. However, I also assume that it's going to use up the co2 in it for plant growth. How does it not run out? I think you could vent it, but then wouldn't that cool it off and thus defeat the purpose of a greenhouse? All my web searches either give climate change facts or co2 supplementation by farmers.

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[–] 7 points 11 months ago

Most oxygen produced on earth and CO2 consumed is done by algae.

Thats more because of total biomass, and the difference is we're basically a ball of water.

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