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.
Quick Answer. As few as 3,200 tigers remain in the world as of March 2014. At the beginning of the 20th century, there were 100,000 tigers worldwide. This means that the number of tigers in the wild has dropped approximately 97 percent in the past century.