BBE 1002 Final Exam Questions and Answers Latest Update Verified 100%

BBE 1002 Final Exam Questions and Answers Latest Update Verified 100% True or False? The US is a net exporter of iron ore. (Lesson 1) True The US imports about _______% of the copper it consumes. (Lesson 1) 30% According to Dave Morris's 'The Once and Future Carbohydrate Economy', "In 1820, Americans used two tons of [plant matter] for every one ton of [coal/oil]... But by 1975 Americans used ________ ton(s) of [coal/oil] for every one ton of [plant matter]." (Lesson 1) Eight According to the 2017 U.S. Energy Information Administration's report on proven crude oil reserves by country, the top two countries are 1. Venezuela and 2. Saudi Arabia. Which country ranks third for largest volume of proven reserves? Canada Biorenewable resources are a subset of non-renewable resources. False In the book "The Irresponsible Pursuit of Paradise" the author suggests that all of the products we consume have their origin in ________________. mining, forest harvesting, or agriculture. In the book Irresponsible Pursuit of Paradise (IPP) the authors main frustration seems to be: (Lesson 1) People like to consume things but don't like extracting the resources needed to make these things. Figure 2 showed the % consumption of different resources for the developed nations. It showed that in the year 2010 these countries consumed about __________ of the global petroleum consumption. (Lesson 2) 50% In Hans Rosling's video he suggested that the growth in population by the poorest people would result in the biggest increase in energy use. (Lesson 2) False When we think about consumption of resources there is both indirect and direct consumption. Match the following: (Lesson 2) Gasoline in our car - direct Electricity for our home - direct Copper for the electric wires along the road - indirect concrete used in the roadway - indirect toothpaste - direct True or False? Figure 2 in the reading for the lesson suggests that cement consumption in the wealthy nations is going up over time. (Lesson 2) False On average, each person in the US consumes about ________ lbs of mineral, metal, and fossil resources per year. (Lesson 2) about 40,000 lbs Globally consumption of minerals is about 12 tons per person per year. However, this is slightly misleading because (Lesson 2) wealthy developed countries consume much more and poorer countries consume much less. Assume the Proven Reserves of the mineral bambium are 50 tons and the consumption rate of bambium is 2 tons per year. What is the R/P ratio? (Lesson 2) 25 years What was the current R/P ratio for crude oil in 2010? (Lesson 2) about 43 years In the video Hans talked about the 4 billion people that live between the poverty line and "the airline". Of these 4 billion about how many people have washing machines? (Lesson 2) 1 billion Assume the world population at the end of 2017 was 7.4 billion people. The population growth rate in 2018 is 1.07%. How many more people were on the planet at the end of 2018? (Lesson 2) about 80 million more What are people most concerned about when they are arguing "Not in my backyard"? (Lesson 3) local environmental issues From the video, the taconite in the Mesabi formation contains about ___% iron. (Lesson 3) 30% What was one of the reasons, cited in the text, that there was a spike in oil prices in the 1970's? (Lesson 3) US oil production slowed What example was used to explain the concept 'it takes more resources to extract more resources"? (Lesson 3) Mountaintop coal mining Which of the following reasons were given for why countries import resources? (Lesson 3) It's cheaper because of cheap labor. There is no local supply. It's cheaper because of relaxed environmental regulations. Match the stages of life cycle. (Lesson 3) Mining of iron ore - Extraction Making steel from iron ore - Production Recycling a car - End of life Driving a car - Use Building a car - Production One of the big environmental issues with mining of metals is the tailing ponds. What are "tailings"? (Lesson 3) The leftover crushed rock after the metals are extracted. Which best describes the concept "it takes resources to extract resources"? (Lesson 3) It takes water and fossil fuels to extract minerals or fossil fuels. In Chapter 7 they cited a study that looked at the recycling rates of 60 different metals. They found that the recycling rate for over half of them was ___________. (Lesson 3) less than 1% Given that we don't want to mine new resources because of environmental damage, we have to find ways to reduce consumption. What did Chapter 7 say about steel recycling? (Lesson 3) There is a significant benefit in recycling steel. Figure 3 shows the carbon dioxide emissions to the atmosphere from the different sources. In 1900 the greatest CO2 emissions were from _________. (Lesson 4) Land Use Change True or False? Water vapor is considered a greenhouse gas. (Lesson 4) True The carbon cycle is drawn out in Figure 1. How much carbon is being emitted from human activity? (Lesson 4) 9 billion metric tons Plants take carbon dioxide out of the atmosphere because of photosynthesis. Living plants also put carbon dioxide back in the atmosphere through a process called _____________. (Lesson 4) respiration The topic of biorenewable resources draws on information from all over the world. As such, sometimes the measurements we use are in metric (e.g. kilogram, meter) and other times standard units (e.g. lbs, feet). Anything about the carbon cycle is done in the metric system. "Tons" in the carbon cycle refers to metric tons. How much is a metric ton? (Lesson 4) 1000 kilograms The cool graphic on carbon dioxide concentrations over time (since like 800,000 BCE) showed some interesting things. What was the approximate concentration of CO2 in the atmosphere in 1979? (Lesson 4) 330 ppm If you watch the animation called "Pumphandle", it tracks CO2 concentrations back 800,000 years. In the animation, pre-industrial concentrations were about ___________. (Lesson 4) 280 ppm In the NASA video showing carbon dioxide concentrations in the atmosphere (A Year in the Life of Earth's CO2) the red colors in the northern hemisphere start to fade (concentrations are reduced) because of ____________. (Lesson 4) plant uptake of carbon dioxide Since this class is about biorenewable resources (stuff from plants) it is good to note that plants take up carbon from the atmosphere in the form of carbon dioxide. According to Figure 1, how much carbon do plants take up through photosynthesis? (Lesson 4) 123 billion metric tons In the NASA video showing carbon dioxide concentrations in the atmosphere (A Year in the Life of Earth's CO2) what season showed the highest concentration of carbon dioxide in the northern hemisphere? (Lesson 4) Winter In an earlier lesson you learned about the history of the transition from wood to oil and coal as the primary fuel source. Since about 1800 there has been a 33% increase in carbon dioxide levels, globally. During this time period concentrations went from about ________________ to ______________. (Lesson 5) 300 ppm to 400 ppm Only since the industrial age has there been greenhouse gases in the atmosphere. (Lesson 5) False Figure 2 was meant to show: (Lesson 5) Including human greenhouse gas emissions and land use changes improved the computer model's predictions of global temperatures. A group called the International Panel on Climate Change released a report in 2018 that outlined some likely impacts of a 1.5 degree change in global temperature. Which of these is NOT one of their concerns? (Lesson 5) Increasing rainfall across the southern hemisphere Energy is measured in Watts/m2. Yep, the same 'watts' used when you are shopping for a light bulb. On average, how much solar energy reaches the earth's atmosphere? (Lesson 5) 340 Watts/m2 One consequence of climate change is longer growing seasons in northern climates. (Lesson 5) True Identify the following as weather or climate events. (Lesson 5) Record low temperatures on Jan 31, 2019 - Weather Flooding in Indonesia Oct. 2018- Weather Average nighttime low temperatures are increasing in Minnesota in the winter - Climate The frequency of droughts in Texas is increasing - Climate The understanding of how greenhouse gases trap energy is a relatively new theory that scientists have been evaluating since about 1980. (Lesson 5) False You are walking along one sunny winter day and the suddenly you cry "Albedo! Too much albedo!"What were you looking at? (Lesson 5) Fresh snowfall. The global temperatures in the last ice age were about _______degrees Celcius cooler than current global temperature of 15C. (Lesson 5) 4 Which of the following groups was NOT specifically listed as a potential user of LCAs in the video? (Lesson 6) Environmental activists There was a rather mixed message in the video regarding hand drying. Tim suggested that they are about equal and dependent on where the electricity comes from or where the trees were grown and what environmental impact was most important. However, near the end of the lecture Emily and Katie presented a study that did a complete LCA on three hand drying methods. What was the conclusion of the study Emily and Katie found? (Lesson 6) Electric hand dryers (such as Dyson) were best Tim and Kim talked about how data-intensive and complex the LCA process is. What did they mention that can be done to deal with all this information, streamline the process, and address the most impactful areas? (Lesson 6) Focus on only the biggest contributors to the environmental impacts (hot-spotting). According to the lecture an LCA provides _____________ (Lesson 6) information to assess the environmental impact of a product or service Near the end of the discussion Kim suggested that where you live has a large part to play in your carbon footprint. What was she referring to? (Lesson 6) Some areas of the country have cleaner elctricity. It is estimated that there are about 20 lbs of CO2e per gallon of milk. Coke has a footprint of about 250 g CO2e/liter. Both evaluations were 'cradle to grave,' but we still have a problem with the comparison because they are in different units. What is milk's carbon footprint in g CO2e/liter (rounded)? (Lesson 6) 2400 g CO2e/liter Setting of the "system or study boundaries" is part of the "impact assessment" step of the LCA. (Lesson 6) False Which of the following was NOT a common problem listed with LCAs? (Lesson 6) LCAs are still uncommon and not conducted frequently enough. Match the terms with the definitions. (Lesson 6) Refers to defining the product or system we are studying. - Function Unit Collecting all of the data that is needed for an LCA - Inventory Analysis Where the LCA begins and ends in terms of scope. - System Boundary Life cycle assessment (LCA) can analyze a wide range of environmental and health impacts. Which of these are impacts that could be evaluated with an LCA? (Lesson 6) Eutrophication Potential, Ozone destruction, Ocean acidification potential, Human health, Climate change potential During photosynthesis, how many sugar molecules are made from 6 carbon dioxide molecules + 6 water molecules? (Lesson 7) 1 The oldest part of the tree is___________. (Lesson 7) in the center of the tree. True or False? Both trees and corn exhibit secondary growth (growing outward from the stem). (Lesson 7) False Sap, the fluid flowing in the tree, has more sugar when it is moving ___________ . (Lesson 7) from branches to roots