Final answer:
A food chain usually starts with the original food source. For example, in a grassland food chain, the grass serves as the original food source that is consumed by a primary consumer, which is then consumed by a predator.
Step-by-step explanation:
The subject of this question is Biology. A food chain typically starts with the original food source. This is because the original food source serves as the base for the entire chain, providing energy for other organisms to consume. For example, in a grassland food chain, the grass (original food source) is consumed by a herbivore (primary consumer), which is then consumed by a predator (consumer), creating a chain of energy transfer.
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