Chapter 13 biology: Energy and ecosystems 5.0 / 5 based on 1 rating ? BiologyEnergy and ecosystemsA2/A-levelAQA Created by: LaurenSkyeShelleyCreated on: 05-07-17 14:11 43215 Across 1. What do the arrows in a food chain represent? (6, 4) 4. What is biomass measured in? (on land) (5, 3, 6, 5) 5. What is biomass measured in? (in water) (5, 3, 5, 5) Down 2. How is the method to measure the chemical energy in dry mass? (11) 3. What is a food chain? (1, 7, 12)
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