Anyone who paid attention in 4th grade should know that.
Sarcasm tag added with extreme prejudice!!!
The original pollution (hundreds of millions of years ago) was oxygen. It was caused by the explosive, world-wide plant and algae reproduction and growth because of the CO2 rich atmosphere. Everything was fine for millions of years until the plants put out so much oxygen it poisoned their own environment. Then all those oxygen breathing life forms developed.
Yep. We were taught carbon-DI-oxide was good and carbon- MON-oxide was bad.
Read the 1971 letter from Hillary to Alinsky and you’ll see just how stupid these liberals are. They cannot think for themselves. They must be TOLD what to think, what is true, etc. They can’t look it up and learn it on their own. And not only the voters, but the ones the voters vote for, too.