Primary Producer
1차 생산자
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<speciesfyi-glossary slug="primary-producer"></speciesfyi-glossary>Definition
An organism that produces organic compounds from inorganic substances through photosynthesis or chemosynthesis, forming the base of food chains.
Detailed Explanation
Without primary producers, all other life would collapse — they convert solar or chemical energy into the organic matter that fuels every food web. Phytoplankton produce roughly half of Earth's oxygen and underpin all marine food chains. Deep-sea hydrothermal vent communities replace sunlight with chemosynthesis, where bacteria oxidize hydrogen sulfide to build organic carbon.