From the article:EPA doesn’t state that CO2 by itself is a pollutant given that humans and plants exhale it,...
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Do plants exhale CO2? I thought plants “inhale” it then “exhaled” O2???
Help.
That’s “New Science”.
We have always been at war with Eurasia...
Same as humans.
Which is why the "breath of life" works because there is still oxygen in what we exhale.
Now plants exhale more oxygen then they do carbon dioxide which is the opposite of humans but the statement is correct.
To the best of my recollection, plants take in CO2 and produce O2 during photosynthesis, in the daytime. At night, this reverses, so O2 is taken in and CO2 is expelled.
The atmosphere of the entire Earth is their “storage battery” to get them through periods of darkness.
Animals show up later to take advantage of this energy-reserve.
They do both. When engaged in respiration (no light or low light) they release CO2 like animals. When the sun shines they are doing photosynthesis. This fixes CO2 and releases Oxygen. There is a net advantage to photosynthesis. So they use more CO2 (sequester in wood and cellulose) than they release.
Plants absorb and produce both oxygen and carbon dioxide. When there is light, the net balance is more oxygen and less carbon dioxide. At night, this is reversed. But the effect is tiny, and air mixed freely.