A food chain is a linear sequence that illustrates how energy and nutrients flow through an ecosystem, showing the transfer of food energy from one organism to another. It connects different trophic levels, starting from primary producers like plants, which convert sunlight into energy, through various levels of consumers, including herbivores and carnivores, ultimately leading to decomposers that break down organic matter. Understanding food chains is essential for grasping how ecosystems function and how energy moves through them.
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