This is the first 1,000 characters of 448 words (1.79 pages) in the essay titled Nutrition
Nutrition is the science that deals with food and how the body uses
it. All living things need food to live. The food supplies energy, which
people need to perform certain actions. Food also provides substances
that the body needs to build and repair its tissues and to regulate its
organs and organ systems.
Food provides certain chemical substances needed in order for a
person to maintain good health. These chemical substances are called
nutrients. Nutrients can perform three important functions. They provide
materials for building, repairing, or maintaining body tissues. They help
regulate body processes. They serve as fuel to provide energy. The
body needs energy to maintain all its functions. People who do not get
enough nutrients are sometimes lazy and are unwilling to work.
The foods we eat contain thousands of different chemicals. Our
body, however, only needs only a few dozen...
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