As we all know that every organisms either small or large or micro need to obtain energy for their survival in the habitat they live. The way the organisms feed or depend on other for food to metabolize their daily activity and the structural linear is know as food chain. According to wikipedia dictionary, 'A food chain is the sequence of who eats whom in a biological community (an ecosystem) to obtain nutrition.' Starting from the primary producer that depend on sunlight to make their nutrient and they are called autotroph or primary producers For examples; plants. And the next on is herbivores or primary consumers that feed on primary producers or autotroph organisms are 'grasshoppers' and follow by the next link chain called secondary consumers that feed on primary consumers e.g. rats. In secondary consumers stage, there are two type of feeding, one is carnivores (eating flesh) and omnivores (eating flesh and plants). The next is tertiary consumers that feeds on secondary consumers like snakes and the final one is the quaternary consumers feeds tertiary consumers to living. The predator at the bottom of food chain have less enemy, so they live longer than the primary producers, but the cycle of primary producers at the top of food chain is faster and they produce more in vast for the food cycle. After the bottom predator died, the detrivores (vultures, crabs) feeds on the the quaternary consumers and they decomposed (by the decomposer like fungi and bacteria) as source of nutrients for the primary producers to grow.
The picture of food chain from enchanted learning website below:
References:
www.wikipedia.com
www.enchantedlearning.com
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