6. CO2 is only .039% of the atmosphere.
“6. CO2 is only .039% of the atmosphere.”
Furthermore, the Earth’s second atmosphere was upwards of 100 times more massive and was composed of 98 percent carbon dioxide. So, where did 99 percent of the atmosphere and oll of that carbon dioxide disappear to? Answer: a small percentage was lost to outer space, while the vast majority of the carbon and a substantial portion of the oxygen were deposited in the Earth’s rocks or Lithosphere by lifeforms which used the carbon dioxide as food. Some of the oxygen was released into the atmosphere as the free oxygen we breathe today. Carbon dioxide was by far the predominant gas in the atmosphere in the past, and now life has reduced and maintained it as no more than a minute trace gas. Oxygen was formerly a minute trace gas in the Earth’s atmosphere, and life has liberated it to become a substantial fraction of Earth’s atmosphere in the present times. Earth’s lifeforms have been so efficient at removing carbon dioxide from the Earth’s atmosphere, they have kept much of the Plant Kingdom starved for sufficient levels of carbon dioxide in the atmosphere. Grasses for example developed special biochemical pathways to overcome the problems of carbon dioxide starvation.