This essay need to write in single space.
The outline for this essay is;
First part you will describe 1- How much time does an average child spend watching Television.
Second part you will describe 2-What are the biological, cognitive and social disadvantages of watching Television.
Third part you will describe 3-How we can prevent this?
You can use more than one source.
The source need to be credible.
For example you can use psycholo.about.com ect.
Do not forget references at the end of paper.
I repeat the paper need to be single space