•Organisms in the biotic community are classified according to how they receive nourishment from diverse sources. A food chain is a term used by scientists to explain the nutritional interaction between different creatures, such as producers and consumers. A trophic level is the level at which food passes from one creature to another. The first trophic level is occupied by the producers. Producers are often autotrophic organisms that produce food. Green plants and algae are examples of producers. Simple inorganic compounds in the environment utilized to build biological materials ingested directly or indirectly by consumers may also be included in the biotic community. The second trophic level is occupied by consumers. Animals, for example, are heterotrophic consumers. There are two categories of consumers: those who eat and those who eat and eat and eat and eat and
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