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.
Feathers are the defining characteristic of Aves, found on every living species of bird and no other class of animal. Feathers are made of keratin, the same substance that forms hair and nails in other animals and are highly modified scales.eak. All birds have beaks, or bills, made of a bony core surrounded by a thin layer of keratin. Birds do not have true teeth, but many species have tomia -- sharp ridges along the edges of their beaks. Birds do not chew food but grind or rip it into pieces small enough to swallow.