Final answer:
A food chain is a community of organisms in which each member is eaten by another, forming a series of organisms that are dependent on each other for food.
Step-by-step explanation:
Food Chain: A food chain is a community of organisms in which each member is eaten by another, forming a series of organisms that are dependent on each other for food. It represents the flow of energy and nutrients through an ecosystem.
For example, in a simple food chain in a grassland ecosystem, the grass is eaten by a grasshopper, which is then eaten by a lizard, which is further eaten by a snake. In this chain, the grass is the primary producer, the grasshopper is the primary consumer, the lizard is the secondary consumer, and the snake is the tertiary consumer.
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