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Shellshock live ruler not 100 power7/14/2023 Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next. The primary source of energy for almost every ecosystem on Earth is the sun. Energy cannot be created from nothing, so it must be transferred through the ecosystem. ![]() ![]() ![]() Living things need energy to grow, breathe, reproduce, and move.
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