“How does fracking lower CO2?”
It doesn’t really. But it’s led to a HUGH, almost unlimited amount of natgas that has replaced coal for our electricity generation. Unlike coal it doesn’t add much co2 to the atmosphere.
“For the record, I think it is dumb and dangerous to lower CO2 since it is what plants and trees breath. It is one of the four necessary elements to sustain life. The other 3 being oxygen, water and light.”
Yup.
All plant life on Earth dies below 150ppm. Planet Earth hit an all time low about 10,000 years ago (220ppm).
Thankfully we’ve bounced off that dangerously low level and are now at ~400ppm.
Still well below average.
Some plant life. But C4 won't die because it evolved specifically due to low CO2. A well-watered field of corn in full sun can lower ambient CO2 to 150. It doesn't die.
We were below 200 ppm back then, probably about 190. But your two points are very valid. It is unique in earth's history to have CO2 that low. It is CO2 starvation and a very dangerous condition.