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Chapter 19: 19.1 Describe how primary productivity provides energy to the ecosystem Example question: Which statement best describes the difference between Gross and Net Primary Production? Example question: Which of the following statements is a correct interpretation of the graph representing the relationship between primary productivity and secondary productivity? 19.2 Explain why the net primary productivity differs among different ecosystems Example question: Which of the following statements best describes how temperature and precipitation affect net primary productivity? Example question: The following graphs indicate phosphorus is the primary limiting nutrient in which of the following ecosystems? 19.3 Explain how the movement of energy depends on the efficiency of energy flow Example question: Match the following energy/biomass pyramids to whether they occur in terrestrial or aquatic ecosystems (or both). Example question: Match the definition to the type of efficiency it represents. Example question: (True or False) Dead organic material has a longer residency time in tropical forests than in temperate forests