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Food Chains and Food Webs

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A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.

Food Webs
Food Chains, Food Webs, the Circle of Life, and the Flow of Energy
Food chains help us understand the connection between living things. What eats what? Where does the energy that life needs to survive come from? Learn about producers, primary consumers, secondary or tertiary consumers, apex predators, and decomposers and the roles they play in food chains.



Food Chains vs Food Webs
What is the difference between a food web and food chain?
How is energy transferred in an ecosystem and how much at each level?
Pyramids of biomass and numbers
Ecological Pyramids
Learn all about ecological pyramids and how to show quantitative data about relationships between species.

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You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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