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The main source of energy for ecosystems is sunlight, which is harnessed by primary producers, such as plants and phytoplankton, through the process of photosynthesis. These producers convert solar energy into chemical energy in the form of glucose, forming the foundation of food webs. Other energy sources can include geothermal energy in certain ecosystems and organic matter from decomposed organisms, but sunlight remains the dominant energy source for most ecosystems on Earth.

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AnswerBot

2w ago

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