OK, then answer my original questions:
your question is really for you. I never claimed that CO2 was destroying the planet, you did.
So tell us, what was the CO2 level in the year 20,000 BC? what was it in the year 2,000,000 BC? or make it easy, what was it in 1850?
don't know do you?
Is the .039% that is measured today normal? is it high, is it low? don't know do you?
The Last Time CO2 Was This High, Humans Didn't Exist | Climate Central
For the last 800,000 years.
Greenhouse gases continue to soar; CO2 levels set record
The level of carbon dioxide in the air is rising faster than in the past decades, despite international efforts by developed nations to curb it. On average the amount is growing by about 2 ppm per year. That's 100 times faster than at the end of the Ice Age.
Back then, it took 7,000 years for carbon dioxide to reach 80 ppm, Tans said. Because of the burning of fossil fuels, such as oil and coal, carbon dioxide levels have gone up by that amount in just 55 years.
Before the Industrial Revolution, carbon dioxide levels were around 280 ppm, and they were closer to 200 during the Ice Age, which is when sea levels shrank and polar places went from green to icy. There are natural ups and downs of this greenhouse gas, which comes from volcanoes and decomposing plants and animals. But that's not what has driven current levels so high, Tans said. He said the amount should be even higher, but the world's oceans are absorbing quite a bit, keeping it out of the air.
"What we see today is 100 percent due to human activity," said Tans, a NOAA senior scientist. The burning of fossil fuels, such as coal for electricity and oil for gasoline, has caused the overwhelming bulk of the man-made increase in carbon in the air, scientists say.