Note that common tasks are listed toward the top, and less common tasks are listed toward the bottom. according to o*net, what are common tasks performed by reporters and correspondents?

changeable lenses of different focal lengths allows light to enter the camera,which then forms the image on light-sensitive film;

sorry, but you need to write this essay on your own, or it's plagurism! use the information you gave to you. and find a good topic from the news your good at. for example, video games? just search on your search engine, "video games on the news" and read and watch about it. : ) then just write!