I agree, CO2 is a greenhouse gas in the sense that greenhouses add CO2 to increase plant growth.
Does CO2 trap energy, keeping it from escaping earth? I don’t know that anyone has tested that hypothesis. At .04% of the atmosphere, it does not seem likely.
Decades ago, I read that clouds reflect sunlight into space and thereby cool the world. That makes more sense to me. Clouds were presented as part of a negative feedback loop, that moderated Earth’s temperatures.
As oceans warm, clouds form. As we all know from experience, clouds cool the earth below (nice to have shade). Also clouds reflect sunlight into space. If oceans get warmer, we get more clouds and cooling. If the oceans cool, we get fewer clouds and more direct sunlight. I don’t hear about this anymore. I know warmists see no use for the argument, even if valid. However, I’d like to see this addressed from time to time by honest, albeit poorly funded, researchers.
One might think that volcanoes, forest fires, and other hot events might lead to warming. Am I wrong?
Anyway, I learned about photosynthesis 50 years ago in sixth grade science class. Apparently most STEM classes are extinct.