Acidification is in the same category as sea level rise. Assumed, but not observed in nature since the last ice age melted off..When a person works in the field of a science, vs. a university, it is immediately apparent that most university “science” ideas are created without actual input from what one can observe in the field. Data is fitted to the idea or even discarded if the data doesn’t fit the professor’s ideas. .For example, textbooks state that soil requires hundreds of years to form an inch. Which would not keep up with erosion observed across the planet. For example, 10 to15% of the crust is carbonate rocks and these erode at an average of 1" per year, with greater rates in tropical karst and much lesser rates in deserts..Having seen bedrock be broken up and form 8" of soil in 20 years when grass broke up the rock and added organic material, it’s clear the textbooks have it wrong..The same with rock. In a 12 year span, I watched granodiorite and basalt have drastic changes, merely from freeze thaw, rain, and snow..But the university types still claim millions of years. No rock would last that long. if nothing else, the motions of atoms within the crystals would deform the rock long before then, coming to a state of lowest energy, meaning it would flatten under the load of overburden. Which would also cause fossil bones to go completely flat if they were actually buried for millions of years. Physics won’t be denied merely because someone wants an earth older than it actually is because its their religion. .There is real science and there is the typical garbage that universities produce to get grants from people with axes to grind. “Science” by the dollar for those who want to “prove” something that is later debunked..Given the lack of professionalism in the sciences that became rampant in the last 15 years, most of today’s “science” will be just a much a joke as the idea of phlogiston.