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Name ______________________________ Date _____________ Period _______ # ________ ECOLOGY REVIEW 1. The following diagram represents the energy transfer in an ecosystem. Which of the choices correctly represents how this energy is transferred from one group of organisms to another? A. A = decomposers, B = herbivores, C= producers, and D = predators B. A = producers, B = herbivores, C = plants, and D = carnivores C. A = producers, B = herbivores, C = primary consumer, and D = secondary consumer D. A = plants, B = carnivore, C = herbivore, and D = omnivore 2. Los Angeles, California’s human population is growing at an exponential rate. Which of the following would not be affected? A. The amount of waste produced. B. The quality of air. C. The amount of water needed. D. The amount of solar energy. 3. As the human population increases at an exponential rate globally, the demand for consumer products (food), transportation, electricity, and other basic necessities increases. What will this demand do to the Earth’s natural resources and how will this affect global warming? A. It will cause a decrease in the amount of fossil fuels burned and decrease the amount of CO2 given off to help with global warming. B. It will cause an increase in the amount of fossil fuels burned and decrease the amount of CO2 given off to help with global warming. C. It will cause an increase in the amount of fossil fuels burned and increase the amount of CO2 given off to contribute to global warming. D. It will cause a decrease in the amount of fossil fuels burned and increase the amount of CO2 given off to contribute to global warming. 4. Carbon dioxide in the atmosphere enters the biotic part of the biosphere (earth) through _____________. A. burning of the forest B. photosynthesis C. combustion of fossil fuels D. precipitation Name ______________________________ Date _____________ Period _______ # ________ 5. Which resource is in short supply for plants that are found on the floor of the tropical rain forest? A. water B. soil C. light D. carbon dioxide 6. A population of foxes relies on rabbits for food. Which of the following could be a realistic explanation of ecological events? A. If the number of rabbits increases, the number of foxes will increase in the near future. B. If the foxes become ill, the rabbits will also become ill. C. It the fox population decreases, then the rabbit population will also decrease. D. If the rabbit population decreases, then the fox population will increase in the near future. Read the following passage to answer question 6. 7. Source: USA TODAY research by Brian Brinch; graphic by John Herne How mountains influence rainfall patterns As air ascends, it is forced to rise. The rising air cools, condenses, and drops rain on locations situated on the windward slopes. When the air descends the back side of the mountain is compressed, warming and drying it out. This sinking, dry air produces a rain shadow, or area in the lee of a mountain with less rain and cloud cover. How do the Rocky Mountains (located in a coniferous forest biome) change the climate zone of the United States? A. The mountains have moist conditions to the west of the range and desert-like conditions to the east of the range. B. The mountains cause an increase in temperature. C. The mountains keep clouds from forming. D. The mountains cause an El Niño. Name ______________________________ Date _____________ Period _______ # ________ 7. Part A: Construct a food web with the following organisms by drawing arrows to show the flow of energy from one organism to another: Grass Snakes that eat mice Rabbits, mice, and deer that eat grass Owls that eat mice Foxes that eat rabbits and mice Cougars that eat deer Eagles that eat rabbits and owls Part B: List the producers, primary consumers, secondary consumers, and tertiary consumers in this food web. Producers Primary Consumers Secondary Tertiary Consumers Consumers grass rabbits eagles eagles mice owls deer foxes cougars 8. Show how much energy would remain at each trophic level as the energy is passed from one level to another. (3 points) 100, 000 kcal What does this diagram tell you about the energy consumption at each level? (1 point) ______________________________________________________________ Name ______________________________ Date _____________ Period _______ # ________ 9. Determine which type of symbiotic relationship is shown for each of the following situations. (You will choose either parasitism, commensalism, or mutualism as your answer.) (3 points) A. A tapeworm that lives inside the intestinal tract of a dog. B. Honeybees feeding on a flower’s nectar and spreading the flower pollen to another flower. C. A clown fish that protects itself by swimming into the tentacles of a sea anemone to avoid being eaten by a predator. 10. Read the information in your textbook on pages 422-423 on crop rotation and chemical fertilizers to answer question 10. Corn crops rely on large amounts of nitrogen in the soil. Give two advantages of using a legume (bean) crop rotation system to fertilize corn crops. Give one advantage and one disadvantage for using chemical fertilizers to fertilize corn crops. (4 points) Using a legume crop rotation system would replenish the nitrogen that is lost as a result of planting corn. This would make the soil more fertile. One advantage to using chemical fertilizers to fertilize corn crops is that it makes them grow better and healthier. A disadvantage to using chemical fertilizers is that it could get into the water supply as runoff occurs. 11. What is the difference between a coniferous forest biome and a deciduous forest biome? Coniferous plants do not lose their leaves (needles) where deciduous trees do lose their leaves. . 12. How do invasive species like the zebra mussel, brown tree snake, or Asian carp influence an area that they are not native to? How can we control the spread of invasive species? 13. What is ocean acidification? What can we do to lessen its effects?