Biology Unit 1: Matter and Energy in Ecosystems
(c) Describe the similarities between photosynthesis and respiration. (6) (Total 17 marks) 6. The diagram shows the flow of energy through a marine ecosystem. The units are kJ m–2 year–1. (a) (i) Calculate the percentage of the light energy at the sea surface which is converted into chemical energy in the producers. Show your working. (2) ................
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