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.
Distribution: Sea stars live in all the world's oceans. They can be found in tropical to polar habitats, and from deep to shallow water. Visit a local tide pool, and you may be lucky enough to find a sea star! Reproduction: Sea stars may reproduce sexually or asexually.ea Star Feeding: Sea stars feed on bivalves like clams and mussels, and other animals such as small fish, barnacles, oysters, snails and limpets. They feed by grasping their prey with their arms, and extruding their stomach through their mouth and outside their body, where they digest the prey.