What does the sroutum do?

Why concepts are important? What is the difference between foundation subjects and core subjects? What are attempts at explanations of what is seen? What is the difference between the reason that and the reason why and just the reason? Can you give me at least 10 examples of holding tools? Were is most of earths fresh water located? What are the goal of science? What are factors that are tested by being varied by experimenter? Why is no gas given off bt yeast mixed with suger and water at 100oC? What is a GLU blood test for? What are 2 ways to separate the substances in a mixture? How many different types of crisps are there? How many grams is three and a half ounces? Is burns in the presence of oxygen physical or chemical change? If a person is fifty years old what year was he born if this year is 2008? What is Inheritable knowledge? The vagus nerve does not innervate the? Name the science that studies the complex relationships between living things and their surroundings? Why is a glass called a glass? Computer system aid learning Discus?