34. If 8% of chemical energy of 10,000 J is transferred from primary producers to primary consumers, such as caterpillars, and 8% of that energy is transferred from primary consumers to secondary consumers, such as certain birds, how much energy is available to the secondary consumers? 3
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- Ragweed Black-tailed jackrabbit Coyote Deer mouse Grama grass Red-tailed hawk 21 Which of the following energy pyramids best represents the flow of energy in the food web pictured? A Red-tailed hawk Coyote Deer mouse Deer mouse Ragweed Coyote Black-tailed jackrabbit Red-tailed hawk Black-tailed jackrabbit Grama grass Ragweed Grama grass в D Coyote Red-tailed hawk Coyote Grama grass Deer mouse Red-tailed hawk Black-tailed jackrabbit Black-tailed jackrabbit Ragweed Grama grass Ragweed1. Construct a table comparing natural gas, coal, and oil according to (a) origin, (b) fuel value, (c) other uses, (d) chemical composition, (e) environmental effects, etc. 2. Make a report on biofuels currently being studied and used in the Philippines. 3.Make a presentation on the advantages and disadvantages of using biofuels as an alternative energy source in the Philippines.Figure 46.8 Why do you think the value for gross productivity of the primary producers is the same as the value for totall heat and respiration (20,810 kcal/ m2/yr)?
- 40. Equation(s) producers, and equation(s) performed by consumers. a. I; II b. II; I c. I and II; I d. II; I and II e. I and II; II is/are performed by is/are SOLAR E I.6CO2 +6H2O C₂4₁₂0₂ + 60₂ II.6CO₂ + 6H₂0← C₂H₁₂O6 + 60₂ ATPForm of energy Kcal/m^2/yr Efficiency of energy transfer (%) Sunlight 600 000 n/a Chemical energy in producers 6 585 Chemical energy in primary consumers 81 Calculate the efficiency of energy transfer by the producers. That is, what percentage of the energy in sunlight was converted into chemical energy and incorporated into plant biomass? Calculate the efficiency of energy transfer by the primary consumers. What percentage of the energy in plant biomass was incorporated into the bodies of the primary consumers? What became of the rest of the energy? How much energy is available for secondary consumers? Based on the efficiency of energy transfer by primary consumers, estimate how much energy will be available to tertiary consumers. Draw a pyramid of production for the producers, primary consumers, and secondary consumers for this ecosystem (see example in your textbook).(3) Based upon what we have read, all of the following are potential negative effects of our concentration on growing biofuels (e.g. corn for ethanol production) except: (a) Disappearing Brazilian rainforest used for growing corn (b) Destruction of natural petroleum reservoirs beneath the Alaskan National Wildlife Reserve (c) Decreased resources to fight famine in Africa and other impoverished areas in the world (d) National focus to find or develop practical resources for future energy production
- 17. Complete the energy pyramid by writing the source of the energy for the food web and how much energy is available to first-, second-, and third-level consumers. Heat GEO09Third-level consumers Heat Heat Second-level consumers Heat First-level consumers 100% Producers2. Energy is critical for economic development and well-being. But all forms of energy production creates pollution that threatens that very well-being. (i) How do we find a balance? (ii) How is this impacted by technological evolution? (iii) How does market structures affect energy use and supply.4) A chicken farm produces about 800 kJ/m' of potential food energy per year. Assume that a human must consume 2400 kJ per day to survive. Although it is an oversimplication to imply that a person could survive by eating only one type of food, calculate the total area of land needed to support the entire student population of your school (n=1800) for one year on a diet of (a) rice ONLY and (b) chicken ONLY. SHOW YOUR WORK ON A SEPARATE SHEET OF One square metre of land that is planted with rice produces about 5200 kJ of energy per year. PAPER! pe here to search
- according to the chart pie 1)what percentage of energy is produced by fossil fuel? 2)what percentage of energy is produced by energy technologies? 3) how much energy is produced by all alternative energy combined? U.S. energy consumption by energy source, 2017 Total 97.7 quadrillion British thermal units (Btu) Total = 11.0 quadrillion Btu geothermal 2 % solar 6% petroleum 37% - wind 21% biomass waste 4% biofuels 21% renewable energy 11% nuclear electric power 9% biomass 45% natural gas 29% wood 19% coal 14% hydroelectric 25%China and the United States, combined, use what percentage of the world's energy? 4% O 12% O 39% 59% 84%Some analysts argue that in order to continue usingoil at the current rate, we must discover and add toglobal oil reserves the equivalent of two new SaudiArabian reserves every 7 years. Do you think this ispossible? If not, what effects might the failure to findsuch supplies have on your life and on the lives ofany children and grandchildren that you might eventually have?
