Read the passage carefully and then answer the following question. Researchers at a major university are testing a new drug to lower cholesterol, called Choless. They started the study by testing mice. Once they received the proper FDA clearances, they began trials on humans. They began testing on males, whose ages ranged between 30 and 60 years old. The researchers split the participants into two groups. Group A was given Choless, while Group B was given placebos. A placebo is completely harmless and looks exactly like Choless, but it contains no active medicine. None of the participants knew whether they were taking Choless or the placebo. The participants were to eat a diet low in saturated fats, and high in protein and fiber. Each participant's cholesterol levels were tested and recorded every week. Based on the passage above, determine each part of the experiment: subject: control: constant: independent variable: dependent variable:

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Nutrition and diet

We are involved in several daily activities. These actions need a significant quantity of energy. The food we eat provides this energy. Food is necessary for development, repair, and other living activities since it supplies energy. All of these are part of the living practice known as nutrition. Nutrition is the study of nutrients in food, how the body uses them, and the relationship between diet, health, and disease. Nutritionists employ concepts from molecular biology, biochemistry, and genetics to understand how nutrients affect the human body. Nutrition also looks at how people can use their diet to reduce their risk of disease, as well as what happens when they ingest too much or too little of a nutrient and how allergies emerge.