If your floor really needs more than that, consider a low-cost alternative to refinishing: Apply a fresh topcoat of nonyellowing polyurethane, found in the flooring section of a home improvement store. Be sure to very lightly sand the floors with a pole sander and fine-grit sandpaper.
There are 440 different species of sharks in the world today classified into eight different orders described below with some examples of known sharks species for each group.
Unfortunately many counts exceed 200 as they count territories which are not independent countries. Nonetheless, each source you use often yields a different answer. Ultimately, the best answer is that there are 196 countries in the world. There are 193 members of the United Nations. Unfortunately, the number 193 is too often used to represent the number of countries in the world.