10.Maddison+Murphy

__7.2.12__
Robert Brown;
 * Who were they? Robert Brown was a scottish botanist.
 * What was their job? He was a botanist who made many botanical expeditions in his time.
 * What did they contribute to cell theory? He was the first to discover that plant cells have a nucleus.
 * Why was their contribution so important? His contribution was important because he discovered the structure of a cell

Robert Hooke;
 * Who were they? Robert Hooke was a natural philosopher and inventor. He was the first person to use a compound microscope.
 * What was their job? He was a biologist who also studied in art and astronomy.
 * What did they contribute to cell theory? He discovered cells or 'boxes' inside a slice of cork that he observed under a microscope. He wrote the first book which described what things looked like under a microscope. He also wrote Hooke's Law which was a law of elasticity in solid bodies.
 * Why was their contribution so important? He proved the theory of cells and cell structure.

__**19.3.12**__
Digestive system of a cow;

__Comparison of the Digestive Systems__ The digestive system of the cow and dog have some similar components, although the systems are mostly different. The dog has a relatively simple system consisting of a esophagus, stomach, large & small intestine. The cow has a much more complex system containing a large & small intestine, esophagus, reticulum, rumen, abomasum and omasum. Both systems have an esophagus which leads from the mouth into the system where the food is then digested. The cow has a

Dogs digestive system

Mosquito fish; The mosquito fish was introduced to control mosquito larvae and prevent the spread of mosquito born diseases. Mosquitofish have a high tolerance for salinity, low oxygen, extreme temperatures (from 0.5-35°C), and pollutants, and are therefore able to live in many areas where other fish cannot. They have developed a resistance to man made chemicals and waste. They can take air from the surface, not only from the water. Their tolerance for salinity allows them to live in almost any body of water, and their resistance to pollutants and waste allows them to survive in many different water conditions. >
 * //__8.5.12__//**
 * What is its scientific name? //Gambusia affinis//
 * Provide a diagram of the mosquito fish
 * . [[image:gambusia.gif width="320" height="243"]]
 * Why was the mosquito fish introduced?
 * What are some of its adaptations.
 * For each adaptation, explain how it improves the mosquito fishes chance of survival?
 * What has this done to the ecosystem and how has this influenced the distribution and abundance of mosquito fish?