No Stupid Questions@lemmy.world · 4 hours ago

how do plants in a green house get enough co2?

No Stupid Questions@lemmy.world · 4 hours ago

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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2 hours ago
Also, most green houses have fans that can help circulate air in from the exterior.

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