ENVS 201 chapter 7 Quiz And Answers 2023 Update

According to FAO's estimates, livestock production generates _______ percent of world greenhouse gas emissions (more than the transport sector), accounts for _____ percent of world water use, and is probably the largest sectoral water pollution source. - ANS-18 / 8 According to one estimate it requires two kilograms of grain to produce one kilogram of poultry, four to make one kilogram of pork, and seven to produce a kilogram of beef. However, only thirteen gallons of oil are needed to produce a single cow. - ANS-False Agricultural pests include_____. - ANS-a. Insects b. Mammals such as mice and rats c. Unwanted plants (weeds) d. Fungi e. Microorganisms such as bacteria and viruses f. All of the Above is Correct An alternative movement to the Green Revolution of the 1950s, ______ was started in the 1970s and criticized the Green Revolution for relying too heavily on pesticides and fertilizers. - ANS-Sustainable agriculture Biofuels are valuable substitutes for imported oil in the transport sector because they can be used in most conventional engines with minor adjustments. Which of the following plants were NOT discussed as sources of biofuels? - ANS-Oak Trees Confining animals on large-scale livestock farms to maximize efficiency______. - ANSa. Stresses animals and promotes disease transmission b. Makes it easier to control the amount and type of feed they receive c. Makes it easier to administer medications and growth supplements d. All of the above is Correct Effects of large-scale agriculture include ______ - ANS-a. Reduced biodiversity b. Fragmented natural ecosystems c. Diverted or polluted fresh water resources d. Altered the nutrient balance of adjacent and downstream ecosystems e. All of the above is Correct Farmers can increase agriculture yields by_____. - ANS-a. Adding energy and materials b. Increasing the efficiency of energy conversion and allocation to the harvested product c. Reducing losses that occur during the growing process d. A and B e. A, B, and C is Correct In addition to questioning whether agricultural and nutritional goals might be more effectively met using more traditional approaches, critics have raised many concerns about GE foods, including _______. - ANS-a. Over-planting resistant crops could promote increased resistance among pests b. Over-planting of GE crops will eliminate the market for organically grow crops c. GE crops or animals will hybridize with and alter the genetic makeup of wild species d. A and B e. A and C is Correct In her 1962 book Silent Spring, biologist and author Rachel Carson drew wide-scale public attention to the environmental effects of ______. - ANS-Pesticides Integrated pest management (IPM) involves the use of which of the following to limit pest damage to agricultural crops? -Continues...