Food Webs and Food Chains Worksheet 1 Look at this food chain. lettuce greenfly ladybird thrush cat a What does the arrow mean in a food chain? The crow mkan the encrgy C Flows when the comalG b Name the producer in the food chain c Name the third trophic level in the food chain. d Name the tertiary consumer in the food chain. e What is the ultimate source of energy that drives the food chain?

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Environmental Microbiology

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