When it rains, Co2 in atmosphere leaches the calcium in rocks forming calcium carbonate that runs off to the sea eventually. Hundreds of millions of years from

When it rains, Co2 in atmosphere leaches the calcium in rocks forming calcium carbonate that runs off to the sea eventually. Hundreds of millions of years from now, our actions leave their mark on some ancient seabed, as a thick white stone(like Dover, England) . The higher the Co2 in the atmosphere, the more it rains, because more water evaporates due to higher temperature, causing faster reduction of Co2 in the atmosphere. Thus there is a natural balance in the cycle. Unfortunately for us, it is way slower than the speed with which we pumped the Co2 out. It takes tens of millions of years to get back to preindustrial levels (of < 200 ppm) Co2