B2b Energy Flow

You need to be able to:

• Construct, use and explain different ways of displaying energy flows in nature (food chains, food webs, pyramids of number, pyramids of biomass)
• Use calculations to explain food chains (efficiency, limits on chain length, energy losses)
• Describe how excretory products and uneaten parts can form the start of new food chains

1. A Food Chain - notice that the arrows show the flow of energy
2. Building food chains - online interactive
3. Energy in a Food Chain Video
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5. A food web example video
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7.  Pyramid of number vs Pyramid of biomass
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9. Summary PowerPoint
10. Efficiency calculation examples...
11. Farming methods to make Food Chains more Efficient
12. Energy flow notes