Explanation: the progessive era(1896-1916) was a period of widespread social activism and political reform across the United States of America that spanned the 1890's to the 1920's. The movement primarily targeted political machines and their bosses.
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The endocrine system secretes hormones into blood and other body fluids. These chemicals are important for metabolism, growth, water and mineral balance, and the response to stress. Hormones provide feedback to the brain to affect neural processing. Explanation:
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seeing how far away their body temperature is from the normal body temperature