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 have three functions: flight, temperature regulation and display. Most birds have hollow main bones with air sacs in them. This makes them lighter and makes flight easier. Birds are bipedal: they have two legs which are often covered with scales (small, flat plates which over-lap in the same way as feathers). They have a hard beak with no teeth. Because birds keep a high body temperature, they use lots of energy. So, they need to eat a lot of food compared with their weight.