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Food Chains. The source of all food is the activity of autotrophs, mainly photosynthesis by plants. * They are called producers because only they can manufacture food from inorganic raw materials. * This food feeds herbivores, called primary consumers. * Carnivores that feed on herbivor
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1. Food Chains (2-3)Food Webs (4-5)Energy Flow Through Food Chains (6-8)The Pyramid of Energy (9)The Pyramid of Biomass (10 - 11)The Pyramid of Numbers (12)