Fungi is one of the main source of food in ocean. That would mean all of algea eater planktons will die. If planktons die new small sea creatures wont be able to eat anything and die. Death of fishes will kill all of fish eating animals. Their death will kill their hunters and so on. As well as we get various sources from algea , and they produce oxygen. It would be really bad . But problems would show off by time
I would go with ''mechanical weathering'' since that makes rock turn smaller and smaller due to the weather.
It would be colder because the higher up you go the colder the weather gets
High-residue cover cropping is an adaption of conservation tillage in which a high-biomass cover crop is grown during the winter and is rolled or cut down prior to no-till or strip-till planting in spring.
It's a.cell wall
hope it helps:)