Food chain and web

A food chain shows how the organisms are related with each other by the food they eat. Each level of a food chain represents a different trophic level. A food chain differs from a food web because the complex network of different animals' feeding relations are aggregated and the chain only follows a direct, linear pathway of one animal at a time. A food web consist of multiple food chain. The arrows in a food chain and web shows the direction of the energy flow.

The sun is the major source of energy for organisms and the ecosystems (biomes) that they are apart of.  A biome is a large region of the world that have certain climates and certain types living organisms. A food chain and web contain producers and consumers. Producers use energy from sunlight to make their food for example plants and algae. Producers are called  primary producers in a food chain. Producers are autotrophs, which means they make their own food through the process of photosynthesis. Consumers are hetetrophs, which means that they depend on ready made food from primary consumers (autotrophs). Consumers can be herbivores, carnivores or omnivores. Herbivores are organisms that eat only plants for example, sheeps and goats. Carnivores are animals that eat only consumers (meat) for example, lions amd wolfs. Omnivores are organisms that eat both animals and plants for example pigs and beers. 

There are three (3) types of consumers, primary consumers, secondary consumers and teritary consumers.

 A primary consumer is an organism that feeds on primary producers. Primary consumers are usually herbivores. 

Secondary consumers are organisms that eat primary consumers for energy . Secondary consumers can be either carnivores or omnivores. 

Teritary consumers is an animals that obtain its nutrition by eating primary consumers and secondary consumers. Teritary consumers are usually carnivorous predators, although they may also be omnivores.

The group of organisms called decomposers forms the final link in the food chain. They break down dead animals and plants and return vital nutrients to the soil for example, bacteria and fungi.

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