Here are all the episodes he kisses her ! Coming Together-Kisses her before he leaves leaving only a Note. Summer's End-kisses her in the Rain while dating Kit and Amy wants him back but he rejects her..
Symbiosis occurs when two different species benefit from living and working together. When one organism actually lives inside the other it's called endosymbiosis. The endosymbiotic theory describes how a large host cell and ingested bacteria could easily become dependent on one another for survival, resulting in a permanent relationship. Over millions of years of evolution, mitochondria and chloroplasts have become more specialized and today they cannot live outside the cell.
From Wikipedia, the free encyclopedia. A representation of the endosymbiotic theory. An endosymbiont is any organism that lives within the body or cells of another organism, i.e. forming an endosymbiosis (Greek: á¼Î½Î´Î¿Î½ endon within, ÏÏÎ½ syn together and Î²Î¯ÏÏÎ¹Ï biosis living).