Effect of Atmospheric CO2 Concentrations on Early Human Societies | Watts Up With That?

Guest essay by Don Healy During the past 100,000 years, human societies have witnessed the vast change in climate that has occurred as we have transitioned from a glacial period that ended about 20…

Higher concentrations of CO2 also have another beneficial effect upon plant growth. As CO2 levels increase up to certain limits, plants are able to use water more efficiently. The reason for this is that the stomata, the pores on the leaves of plants, must remain open longer at low CO2 concentrations to allow sufficient CO2 to enter the plant. CO2 is one of crucial ingredients in the photosynthetic process. While the stomata are open, water vapor escapes as transpiration. The longer the stomata remain open to allow sufficient CO2 to enter the leaf for photosynthesis to occur, the more water escapes. Thus, plants are more drought resistant at higher CO2 concentrations.

Source: Effect of Atmospheric CO2 Concentrations on Early Human Societies | Watts Up With That?

So, if global warming causes droughts, then during droughts we need more CO2 in the air around us so the plants we eat will grow well.

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I am a quilter who designs many more quilts than I will ever make, and I am sharing one quilt design every day in Virtual Quilter. I also share my completed projects in Stuff-Ups, and Christmas decorations in Christmas Everyday of the Year.
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