Meaning of Food Chain

what is a food chain:

The expression food or food chain also called trophic chain, comes from the Greek τρέφοιν, which means to nurture or feed. The food chain is a sequence of living things that depend on each other for survival and the production of energy from each.

The food chain has a flow of energy, which starts at the producers or autotrophs, they are photosynthetic plants, as the plants; is directed to the primary consumers or phytophagous, which are herbivores, insects as animals; then, is aimed at consumers carnivores or secondary; after, go to superpredadores, as a lion or shark carnivore or tertiary consumers; and reach the decomposers such as fungi and bacteria, through different trophic levels. The cycle will only start once the decomposers recycle organic matter to be consumed by the plants again.

Energy and nutrients used by all organisms through the food chain are losing at the time of each transfer in the form of heat, which is not reusable. So if those who are involved in the food chain are less in number, will have more energy the agencies involved in this line.

The imbalance of the ecosystem is one of the main environmental issues of the day. With the extinction of some animal and plant species, more problems are occurring increasingly in food chains and, consequently, damage to the ecosystem. Poaching of animals, water and air pollution and the contamination of rivers, are the factors that influence directly in the food chain.

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Science Dictionary: Food Chain

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