Here is a link to an image of the questions:
http://www.flickr.com/photos/54527991@N06/5441884207/lightbox/
P.S. To those concerned, the reason that I have provided a link to an image of the questions is that these questions have been scanned from a textbook. I have to study Biology at home, through the use of various books, with no teacher to guide me through the process. Therefore, I would appreciate it greatly if someone could explain the answers to those four questions (which I found difficult) as clearly as possible. Thank you very much in advance.
http://www.flickr.com/photos/54527991@N06/5441884207/lightbox/
P.S. To those concerned, the reason that I have provided a link to an image of the questions is that these questions have been scanned from a textbook. I have to study Biology at home, through the use of various books, with no teacher to guide me through the process. Therefore, I would appreciate it greatly if someone could explain the answers to those four questions (which I found difficult) as clearly as possible. Thank you very much in advance.