Amino Acids - molecules that are the building blocks of proteins, Carbon Dioxide - a molecule made of carbon and oxygen atoms, Cellular Respiration - the chemical reaction between oxygen and glucose that releases energy into cells, Circulatory System - the body system that transports molecules to and from all cells of the body, Claim - a proposed answer to a question about the natural world, Digestive System - the body system that takes in food and breaks it down, Energy - the ability to make things move or change, Evidence - information about the natural world that is used to support or go against (refute) a claim, Glucose - a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms, Metabolism - the body's use of molecules for energy and growth, Molecule - a group of atoms joined together in a particular way, Oxygen - a molecule that organisms get from the air or water around them and use to release energy, Proteins - a category of large molecules that perform important functions inside living things, Reasoning - the process of making clear how your evidence supports your claim, Respiratory System - the body system that takes in oxygen and releases carbon dioxide, Scientific Argument - a claim supported by evidence, Starch - a type of energy storage molecule made of many glucose molecules connected together, System - a set of interacting parts forming a complex whole,

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