The food chain in nature is complex and dynamic, constantly changing and moving from the point it was first placed in. Plants and animals all attempt to break down this food chain and consume it for energy. Each individual plant or animal must consume the food in order to survive, but no two organisms are ever able to consume the same amount of food at the same time. In nature, it is like a big game of survival of the fittest, where the fastest and strongest species will ultimately win.

Food is any material consumed to supply nutrition to an organism. Food is generally of animal, plant or fungi origin, and includes vital nutrients, including proteins, carbohydrates, vitamins, or minerals, as well as any vitamins or substances that would be suitable for providing the energy needed by the organisms that consume it. This food is then used to create new organisms and new foodstuffs that will ultimately find their way back into the food chain and out of the ecosystem where it all began. Every plant and animal in a given ecosystem are connected by pathways of root systems, which transport food from one place to another. Many of these food chains can be seen in the form of roots, which extend for thousands or millions of feet right down to the base of the food chain itself. In nature, it takes an entire food chain, an entire forest or ocean, to supply the needs of the plants and animals that live in it.

The human species have relied on food for thousands of years. Modern man depends on food for most of their calories and other nutrients. Nearly all food produced in the world is fed to people around the world, either through the commercial food sources that exist or through the natural sources that have been used for centuries. Modern man has learned how to harness these natural sources of food, while also learning to reproduce these same sources through scientific methods of production and consumption.