i have a firm grounding in chemistry and solubility of gases in liquids gets higher at low temperatures so low light causes elongation but low temperature increases relative CO2 absorption
https://www.sciencedaily.com/releases/2012/05/120521132758.htm
it's because of CO2 solubility in water, i'm almost certain, and this is why CO2 enrichment makes a big difference in width and shortness of space between sidebranches
i have a firm grounding in chemistry and solubility of gases in liquids gets higher at low temperatures so low light causes elongation but low temperature increases relative CO2 absorption
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