E-commerce marketing managers who focus on online purchase behaviors earn an average of $76,500 to $103,250 per year. Managers in interactive marketing, where sellers try to anticipate and address the needs of buyers, average $79,000 to $115,000 per year.
Birds are unique members of the animal kingdom with distinguishing characteristics like feathers and lightweight bones. Watch this educational video from About.com to learn more about birds.he furcula is a bone with a forked shape that is located in the bird's chest, it came about from the fusion of the bird's clavicles. The wishbone helps the bird's respiration, and it strengthens the skeletal area of the birds chest during flight.
Birds and mammals also bear many differences. While birds and mammals are the only vertebrate groups with flying members, the majority of mammal species cannot fly, while the majority of birds can. All birds lay eggs, while only a few mammal species do, and mammal eggs are leathery, unlike the hard-shelled bird eggs. Mammals have solid bones, while most birds have hollow bones to reduce their weight. Most mammals have well-developed teeth, while birds have no teeth as adults.