Comments by "Jack" (@user-pj5ub5cp9k) on "'What Percent Of The Atmopshere Is Carbon Dioxide?': Doug LaMalfa Epically Stumps Deb Haaland" video.

  1. That's simply not true. It's been as low as 180 ppm and plants didn't die.
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  2.  @leonardcollings7389  No. The planet was slightly cooling for six thousand years and heading towards another glaciation until the beginning of the Industrial Era when it began rapidly warming due to anthropogenic CO2 emissions. Kaufman - Holocene Global Mean Surface Temperature - Nature Journal.
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  3.  @SpideyVids  Ice core data. British Antarctic Survey. You didn't look very hard.
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  4. That's nonsense. CO2 levels have increased by fifty percent in the Industrial Era due to anthropogenic CO2 emissions and is increasing by 3 ppm a year. There's no shortage of CO2.
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  5. Nonsense. It was 0.028 percent at the beginning of the Industrial Era.
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  6.  @nullentry6032  Yes. So? CO2 is currently 420 ppm and increasing at 3 ppm a year. An increase of 50%. That's the highest for at least two million years probably a lot longer.
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