Prairies
are flatlands with plenty of short and tall grass. In North America, the
prairies used to be populated with bison, lots of them. The bison are well
suited for the prairies in several ways. The bison were hunted to almost
extinction and replaced by ubiquitous cows, which eat through vegetation and causing
overgrazing. Overgrazing and loss of bison harmed the health of the prairie,
resulting to loss of biodiversity and loss of topsoil.