Introduction

Introduction to Nutrition

All living things must eat or find a way to get food so they can stay alive.

Nutrition is the process by which living organisms obtain and use food materials from their external environment.

This means nutrition is how plants and animals get the things they need to grow and stay healthy.

Eating is important because it gives the body energy to do many different types of work.

This process is essential for various metabolic activities such as growth, reproduction, respiration, and excretion.

This means that without food, your body cannot grow bigger, have children, breathe, or even remove waste.

Both plants and animals feed to obtain the nutrients they need.

Modes of Nutrition

Some living things, like green plants, can cook or make their own food inside their bodies.

Some organisms, called autotrophs, can manufacture their own food.

These are self-feeders that do not need to eat other things to survive.

On the other hand, some living things, like humans and goats, cannot make their own food and must eat plants or other animals.

In contrast, other organisms, known as heterotrophs, cannot produce their own food and must obtain it from other sources.

This means these ones must look for food to eat because their bodies cannot manufacture it.