32. Ecosystems will have a greater chance of being stable over a long period of time if they have A. organisms imported by humans from other environments B. a sudden change in climate C. a diversity of organisms D. predators eliminated from the food chaiks
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- The total dry weight of plant material in a forest is a measure of the forests: a. gross primary productivity. b. net primary productivity. c. cellular respiration. d. standing crop biomass. e. ecological efficiency.Which of the following statements is supported by the results of studies at the Hubbard Brook Experimental Forest? a. Most of the energy captured by primary producers is lostbefore it reaches the highest trophic level in an ecosystem. b. Deforested watersheds experience significantly less runoffthan undisturbed watersheds. c. Deforested watersheds lose more calcium and nitrogen inrunoff than undisturbed watersheds. d. Nutrients generally move through biogeochemical cycles veryquickly. e. Deforested watersheds generally receive more rainfall thanundisturbed watersheds.The quantitative estimate of the total amount of living material is called (a) biomass (b) energy flow (c) gross primary productivity (d) plant respiration (e) net primary productivity
- Deforestation ______. a. increases mineral runoff from soil b. decreases local temperature c. increases local rainfall d. all of the above(25) | Microsoft T: 6X E EverFi Educatic -er| Portal henrico.schoology.com Q2 End of 9 Weeks Test What is one negative aspect of utilizing wind turbines on the peak of mountains? O They can interfere with the migratory routes of birds O The energy produced is a toxic waste that can not be easily destroyed O The cost of maintaining a wind turbine outweighs the energy that will be produced O They pollute the air with atmospheric emissions e Type here to search1. Pick one of the biogeochemical cycles we are altering (C,N,P) and explain an environmental consequence associated with altering that cycle 2. Explain what we can do to get more Americans concerned about that issue 3. What actions are you willing to take personally to address your chosen issue (i.e. if you choose climate change, what steps would you actually take (not things you can do) to minimize your carbon footprint).
- 3. You are planning to build a greenhouse for the school. This graph shows the effect of temperature and carbon dioxide on plant growth. Amount of CO₂ used by plant CO₂ concentration in air 35°C 18°C a. Summarize this graph to explain the effect of CO₂ concentration on plant growth at the two temperatures shown. b. Both CO2 and heat for your greenhouse cost money, while the plants you grow earn you money. Theorize the most cost-effective temperature and CO₂ concentration for the greenhouse. 6xtensions Help Calibri 1 100 1 0 1 J 11 Page 2: Remediating Water Questions U U + B M 1 Page 3: Eutrophication : Questions Cº U IUA 9 3 fs 1. Describe one change in farming practices that can reduce the effects of eutrophication. › » @ QE ✓ Œ = ✓ E • EYE L 1 2. Dead zones are areas in the world's oceans and lakes that are void of life due to low oxygen levels. Explain why dead zones are often located along heavily inhabited coastlines. 3. During heavy rainstorms, sewer systems in some older cities can be overwhelmed with water. This can result in raw sewage being discharged into nearby waterways. What impact might this discharge have on the waterway? 19 4. Explain why the amount of dissolved oxygen in a lake is often considered an indicator of the "health" of the lake. 5. One strategy to reverse the effects of eutrophication in a pond is to install an aeration system. This technology bubbles air into the pond and, in doing so, continually stirs up the surface water so that algal blooms…Involves the participation of decomposers a. water cycleb. carbon cyclec. nitrogen cycled. phosphorus cyclee. none of the cyclesf. all of the cycles
- 29. In some parts of the world, forests are being cut down and burned to clear land for new homes and new farmland. A negative effect of these activities might be A. an increase in edge effect B. a decrease in the average temperature of the atmosphere C. an increase in biodiversity of the deforested areas 30. Which action by humans could improve the quality of the air? A. building homes that use only oil (fossil fuel) furnaces for heat B. buying cars that get more miles per gallon of gasoline C. increasing the number of coal-burning power plants that generate electricity D. cutting down forests to clear land for factories 31. Which action shows an increased understanding and concern by humans for nature? A. importing organisms that could become invasive to try stabilizing existing ecosystems B. getting rid of pollution control laws for industries that promote technology C. removing natural resources at a rate equal to the needs humans D. putting laws in place that regulate the number…D. prevent the migration of native plants 28. The best term to describe purple loosestrife would be A. non-native B. exotic C. invasive D. parasite 29. In some parts of the world, forests are being cut down and burned to clear land for new homes and new farmland. A negative effect of these activities might be A. an increase in edge effect B. a decrease in the average temperature of the atmosphere C. an increase in biodiversity of the deforested areas 30. Which action by humans could improve the quality f the air? A. building homes that use only oil (fossil fuel) furnaces for heat B. buying cars that get more miles per gallon of gasoline C. increasing the number of coal-burning power plants that generate electricity D. cutting down forests to clear land for factories5 of 6 100% 28. The best term to describe purple loosestrife would be I A. non-native B. exotic C. invasive D. parasite 29. In some parts of the world, forests are being cut down and burned to clear land for new homes and new farmland. A negative effect of these activities might be A. an increase in edge effect B. a decrease in the average temperature of the atmosphere C. an increase in biodiversity of the deforested areas 30. Which action by humans could improve the auality of the air? I am fini Cop