BBE 1002 Study Guide (A+ Guaranteed)

What source of energy do most people around the world rely on? correct answers oil Biorenewable Materials correct answers materials derived from living things and capable of being regenerated What is the material used in the greatest quantity in the world (by weight)? correct answers oil?? What are the three ways that humans get industrial raw materials (three methods of extraction) from the earth? correct answers 1. Agriculture 2. Forestry 3. Ocean Do we have more, less, or about the same amount of forest land in the U.S. today as we did 75 years ago? correct answers about the same What is the number one cause of deforestation globally? correct answers agriculture What percent of U.S. energy comes from renewable sources? correct answers 14.3 What caused the loss of forests in the U.S.? correct answers agriculture?? What is the number one source of renewable energy? correct answers wood Name three major concerns with mining? correct answers 1. High energy costs and water costs 2. Many mined materials are low quality ore 3. High outputs of CO2, other gases, waste Name one advantage of mining over forestry or agriculture? correct answers Most recycled thing? correct answers almost 100% recycled What are the 2 biggest concerns with our use of oil? correct answers 1. High output 2. High waste w/recycling Which industry is the biggest user of water: forestry? Farming? Drilling for oil? Mining? correct answers What distinguishes an agricultural system from a natural ecological system? (at least three things) for example, what is different about wild Maine blueberries and blueberries grown as a conventional agricultural crop? correct answers 1. Agriculture system: non-native, hybrid, or genetically-modified crops a. Annual soil disturbance (plowing, planting, harvesting, discing) b. Exposed soil for 3-6 months during dormant season 2. Natural ecological system: no GMO's, no artificial fertilizers, pesticides not commonly used