In research methodology, the words proposition and hypothesis are often confused, and are often used with slightly different shades of meaning by different authors. However, the most popular view is that based on the existing literature in a field, a theory is built.
14 Where they live On a global scale, the sea eagle extends across the northern hemisphere from Siberia and Japan to Europe, and south to the Mediterranean and the Middle East. It is replaced by the bald eagle in North America, although it is the sea eagle that has colonised the southwest coast of Greenland.
The bald eagle's scientific name signifies a sea (halo) eagle (aeetos) with a white (leukos) head. At one time, the word bald meant white, not hairless. Bald eagles are found throughout most of North America, from Alaska and Canada to northern Mexico.About half of the world's 70,000 bald eagles live in Alaska.xamples: patches of white feathers and pale feathers. The bald eagle is the only eagle confined to North America. There are no other large blackish-brown birds with a white head and tail in North American. Skeleton-It weighs about half a pound (250 to 300 grams), and is only 5 or 6 percent of its total weight.