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.
This is known as the endosymbiosis theory (endosymbiosis is a symbiotic relationship between two organisms where one lives inside the other). This theory about the origin of some organelles first came to the attention of scientists in 1905.itochondria are rod-shaped membrane-enclosed organelles that are found in the cytoplasm of most eukaryotic cells. Their size ranges from about 1 to 10 micrometers and they provide the chemical energy that cells need in order to be able to carry out their functions.