article on importance of food
Answers
Food is the most important thing in our lives besides water. Moreover, healthy eating means eating a variety of food that gives you the nutrients you need to maintain your health, feel good, and have energy. These nutrients include protein, carbohydrate, fat, water, vitamin, and minerals.A food is something that provides nutrients. Nutrients are substances that provide: energy for activity, growth, and all functions of the body such as breathing, digesting food, and keeping warm; materials for the growth and repair of the body, and for keeping the immune system healthy.
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Answer:
1. A person is standing between two vertical mountains. the person fire a gun then hears the first echo from the nearby mountain in a time 3 second and here second echo from far mountain in a time 4 second. What is the distance between two mountains?
2. A boy is standing between two walls. the wall closer to him is at the distance o
f 680 m. if he shouts , he hears the first echo after 4 second and another after 2 second. What is the velocity of sound in air and what is the distance between two walls.