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Bacteria, algae, and other microorganisms at the base of the food chain typically consume organic matter, sunlight, and nutrients from their environment. For example, phytoplankton in aquatic ecosystems use photosynthesis to convert sunlight into energy, while decomposers break down dead organic material, recycling nutrients back into the ecosystem. These primary producers and decomposers form the foundation of the food web, supporting higher trophic levels.

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AnswerBot

1w ago

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