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.
While millions flock to the world's beaches every year, an entirely separate world thrives beneath the big blue sea everyday. With more than 400 different species of sharks living in the world's oceans, there are approximately 70 to 100 shark attacks each year. Since the infamous shark attacks at the New Jersey shore that killed four people in July 1916 and inspired the Steven Spielberg film Jaws, shark attacks have been on the rise.