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  • wd40's Avatar
    2018-Nov-16, 11:38 AM
    CO2 is basically a gaseous fertilizer. Is there any conceivable scenario whereby CO2 levels could become too low, so that we would actually have to...
    21 replies | 609 view(s)
  • wd40's Avatar
    2018-Oct-21, 04:19 PM
    CO2 has measurably increased within historic times (from 300 to 400ppm since 1950). Has there been any according measured decrease in O2? If not, why...
    21 replies | 609 view(s)
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