I believe this represents the goal of not doubting anything in science. Paleontologists found a species that was previously known to be extinct, which means that there could be many more discoveries like this that could change history as we know it. I bet this taught scientists to not have a fixed mindset when it comes to searching for more answers on a topic.
I hope I helped!
Chemistry is just about chemical reactions, properties of matter. Unless it is bio-chemistry which is just the mix of two.
You can rule out A and C it isn’t permanent or there wouldn’t be any kingdoms found later on. it is also not always accurate. So that leaves b and d. i would say D. Everything in science is based on predictions.
There will be no food for carnivores if herbivores were removed in the food web.
