Aperture

F2.8

1. What part of the body should we closely relate aperture?

The pupil

2. Finish this sentence - the smaller the Aperture the more blurry the background is , the higher the Aperture the more clear the background is.
3. In your own words tell me how aperture impacts Depth of Field?

It effects the Depth the Field because if you really want to focus on your main model or center piece of a photo; you need to have a small aperture to make the background blurry. Vise versa if you want to focus on the background and purity of your photo. 

F16