Energy - All living things need ___________., Trophic Levels - The feeding position in a food chain or energy pyramid that an organism occupies based on what it eats, Producers - Get their energy from the Sun through the process of photosynthesis, Autotroph - Another name for a producer, Consumers - Unable to make its own food, Heterotrophs - Another name for a consumer, Primary Consumers - First to consume (the level right above the bottom producer level), Carnivores - Meat Eaters, Herbivores - Plant Eaters, Apex Predators - Top of the Food Chain , Decomposers - Garbage man of ecosystems,

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