Final answer:
The first organism in a food chain is a producer, also known as a phototroph. Producers make their own food through photosynthesis.
Step-by-step explanation:
In a food chain, the first organism is called a producer. Producers, also known as phototrophs, are able to make their own food through the process of photosynthesis. They use sunlight to convert carbon dioxide and water into glucose, a form of energy that can be used by other organisms in the food chain.
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