Food chain

Aspect of ecosystems

A food chain shows the feeding relationship between different organisms in a particular environment and/or habitat.

Arctic food web made up of a number of food chains

Plants are at the bottom of a food chain because they are producers that make their food from photosynthesis. Consumers are animals that eat the products of producers or other animals. The direction of arrows between the organisms shows who eats what and what gets eaten by what.[1]

A food chain also represents a series of events and consumption in which food and energy are consumed from one organism in an ecosystem to another. Food chains show how energy is passed from the sun to producers, from producers to consumers, and from consumers to decomposes such as fungi. They also show how animals depend on other organisms for food.[2]

In any ecosystem, many food chains overlap. Different food chains may include some of the same organisms. Several consumers may eat the same kind of plant or animal for food. When this happens, the food chain forms a food web.[3]

Related pageschange

Referenceschange

  1. Learn Science; Mike Evans and Linda Ellis (2006). Intermediate Workbook. DK Publisher. ISBN 0-7566-2105-4.
  2. English through Science; Dinorah Pous (2003). Blue Planet. McGrawHill. ISBN 007-125034-4.
  3. Odum E.P. & Barrett G.W. 2005. Fundamentals of ecology. Brooks/Cole. ISBN 978-0-534-42066-6
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