ACTIVITY: HUMAN VISIONWatch the video atUse the information in the video to answer the following questions. Edit this document, insertingyour answers, and upload it to the appropriate dropbox.1.What shape of lens is a human cornea?a.2.What is the function of the iris? What part of the eye that we see in others is the iris?a.3.What is the name of the fluid in the eye? What is its function?a.4.What cells are responsible for sensing color? How are different types of these cells different?a.5.Is the image formed by the eye upright or inverted? How must this image be processed?a.6.What allows the eye to focus? Explain by referring to the specific biological processes in play.a.7.How does the lens change to see something far away? To see something close?a.8.What limit is caused by the fact that the eye cannot change to any possible shape? Why?