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Answer:
Benjamin Franklin
Explanation:
Benjamin Franklin was one of the founding fathers of America and he is well known for his many inventions as well. All the mentioned inventions were invented by him along with his contribution towards development of U.S Postal system.
You would use a beaker because it measures liquids and solids by volume.
To get a more accurate measurement, you should weigh the liquids. That process of measurement would give you the greatest accuracy.
Answer:
You have the exact same types of chemicals in your body as when you were younger.
Explanation: