Because it would be more true to say that the oceans ate the CO2, which is what it does on a regular basis.
The ocean oxygenates when CO2 mixes with oceanic plant life. Plants use it for photosynthesis, and give off oxygen, which fish use to digest the plant life and smaller fish they eat.
What NOBODY around this giant fraud has mentioned, and nobody with a high school science background should fail to grasp, is that CO2 IS HEAVIER THAN AIR.
If there really was a build up of CO2, the first place you’d locate a sensor is in Death Valley, CA - which is below sea level.
If the CO2 there doubles, from 0.037% of the atmosphere to say 0.074%, then you’d have a case that humans are the ones causing the problem.
YOU STILL WOULD NOT HAVE ESTABLISHED THERE IS A PROBLEM WITH RESPECT TO CO2. At those low concentrations, it isn’t going to make any difference at all in holding heat to the surface of the earth.
The only thing that can do that is atmospheric WATER VAPOR.
NO2, SO2, and other ‘acid rain’ causing chemicals are also heavier than air.
When they come out of giant smoke stacks, the start descending through the air column until they end up in clouds, which then becomes rain, and indeed damages forests and water supplies. You can replicate that bit of science in a lab, as you can the CO2 science above.
NONE of what these criminals are shoveling can be proved in a lab, only in a cooked model on a computer.
Smokestacks do not reach above the clouds.