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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All matter is conserved in an ecosystem, but energy flows through an ecosystem. This energy moves from one organism to the next in what is known as a food chain. All living things need nutrients to survive, and food chains show these feeding relationships.
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Answer:
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.
Explanation:
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Importance of food for living organisms:
1) Helps in growth of living beings
2) Helps in repair and replacement of damaged parts of the body
3) Provides energy required for various activities
4) Provides protection from infections and diseases
5) Helps in overall growth and development of an organism