Answer : 3 Chlorine Explanation : Answer: C) Chlorine Explanation: Nutrients that are needed in large amounts are called Macronutrients. There are three macronutrients required by humans:1. carbohydrates (sugar),2. lipids (fats), and3. proteins. Each of these macronutrients provides energy in the form of calories. Some other macronutrients are: nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), sulfur (S), magnesium (Mg), sodium (Na).
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