Replies

To: Libloather

Why do big commercial greenhouses have CO2 generators to boost the CO2 level?

24 posted on 02/26/2019 4:37:33 AM PST by ptsal

To: ptsal

Good point. A Google search for “CO2 generators” reveals there is such a thing, and they are used by greenhouses.

68 posted on 02/27/2019 11:13:31 AM PST by I want the USA back (Lying Media: willing and eager allies of the hate-America left.)

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