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13.4-Food Chains and Food Webs

13.4-Food Chains and Food Webs. FOOD CHAIN. Single sequence that links species by their feeding relationships. T races the transfer of energy Simplest way to look at energy flow in an ecosystem. Trophic Levels. level in a food chain 1. Producers always first level

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13.4-Food Chains and Food Webs

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  1. 13.4-Food Chains and Food Webs

  2. FOOD CHAIN Single sequence that links species by their feeding relationships. Traces the transfer of energy Simplest way to look at energy flow in an ecosystem

  3. Trophic Levels level in a food chain 1. Producers always first level 2. Primary consumers next level (herbivore) 3. Secondary consumer- eat herbivores (small carnivore or omnivore) 4. Tertiary consumer-carnivores that eat secondary consumers.

  4. FOOD WEB Interconnected food chains Organisms usually have multiple feeding relationships

  5. FOOD WEB More realistic display of feeding relationships Arrows show transfer of ENERGY

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