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Answer: A.
Explanation:
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Matter is anything that is made of atoms and that has a mass. Matter makes up all objects and objects and organisms. It's made up of very small particles its called atoms. Atoms are the smallest units of matter. Were named by the Greek philosopher Democritus in the fifth century BCE. Come from the Greek word atomos, meaning "cannot be divided." Come in over one hundred types. Mass is the amount of matter in an object. It depends on the object or organism. Is measured in kilograms (kg) or grams (g). 1,000 g= 1 kg.
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