What is another name for a semicircular chopper?

How many 250 milliliter glasses can be filled from a 2 liter bottle of water? How far is teresina Brazil from the equator? What branch of chemistry is it when finding out how much nitrogen is in a sample of air? What event takes place in Pampalona every year? Fertilization of the ovum occurs where? What would happen if Elodea was replaced with animal cells in the experimental test tube? How does changes in pressure affect equilibrium? Cilia and flagella are most similar in? What would happen to tides if Earth stopped rotating? How many cubic miles are in a cubic kilometer? 3 ways in which plants are important to us? Is volume and mass the same thing? Which Pythagorean thinker held that the heart was the special seat of life based on its central placement in the circulatory system? What is the Louisiana Bayou food chain? What is visocity of bentonite? Should limestone be used for aggregate? What are the pros and cons of being a forensic science? What is natural selection and does is give you a competitive edge? Can a telescope refract light? What is the significance of a thumb ring?