1、The business of drawing public attention to goods and services.The advertising business company can advertise via T.V program、billboard in public or leaflet.
2、I think both people based and techology.Because it needs a lot of people to come up with some innovated idea ,and sometimes advanced techology is also needed.
3、Advertising provides us with a good collection of goods and services,from which we can make our best choices.For the manufacturer,they can take advantages of the ads to project the characters f their products so as to seize the vision of the consumers and gain them huge profits.
4、A：Too many ads do spoil our daily life and waste our time.B：They interrupt the TV programs,fill our letterbox ,and ruin our appreciation of nature .
5、I dont know the answer ,sorry .