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1. Four environmental factors are listed below. A. energy B. water C. oxygen D. minerals Which factors limit environmental carrying capacity in a land ecosystem? A) A, only C) A, C, and D, only B) B, C, and D, only D) A, B, C, and D 2. Changes in a deer population are shown in the graph below. Which statement best explains section X? A) B) C) D) The population has reached the carrying capacity of its environment. Energy is used for interbreeding between members of different species. A predator recycles the remains of dead organisms. Competition does not occur between members of different species in the same habitat 3. One biotic factor that limits the carrying capacity of any habitat is the A) B) C) D) availability of water level of atmospheric oxygen activity of decomposers amount of soil erosion 4. The carrying capacity of a given environment is least dependent upon A) B) C) D) recycling of materials the available energy the availability of food and water daily temperature fluctuations 5. The graph below shows the growth of a population of bacteria over a period of 80 hours. Which statement best describes section II of the graph? A) The population has reached the carrying capacity of the environment. B) The population is greater than the carrying capacity of the environment. C) The rate of reproduction is slower than in section I. D) The rate of reproduction exceeds the death rate. Answer Key Population Dynamics II 1. D 2. A 3. C 4. D 5. D