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MATCHING – In the space provided, write the letter of the term or phrase that best matches the description. a. green revolutionb. overuse of landc. fertile soild. high pesticide usee. integrated pest managementf. no-till farmingg. irrigation and evaporationh. genetic engineeringi. overharvestingj. malnutrition ______ 1. less erosion______ 2. resistance to pesticides______ 3. poverty______ 4. desirable traits transferred______ 5. desertification______ 6. action of living organisms______ 7. new crop varieties, increased yields______ 8. minimize economic damage from pests______ 9. depleted fish populations______10. salinization MULTIPLE CHOICE – In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. ______11. A given plot of land can produce more food when used to grow plants than when used to raise animals becausea. 1 Cal animal protein requires 10 Cal from plants.b. one-tenth of a plant’s mass can be used as food.c. plants provide more nutrients per gram.d. Both (a) and (b) ______12. The green revolution depended ona. new biodegradable pesticides.b. high-yielding grain varieties.c. clearing forest for crop land.d. organic fertilizers. ______13. Most of the living organisms in fertile soil are found ina. the surface litter and topsoil.b. the leaching zone.c. the subsoil.d. the bedrock. ______14. Erosion is a danger whenever the soil isa. bare and exposed to wind and rain.b. plowed along the con- tour of the land.c. covered with grass.d. covered by forest. ______15. The development of pesticide resistance is an example ofa. malnutrition.b. persistence.c. pest control.d. evolution. ______16. All of the following describe typical types of malnutrition excepta. amino acid deficiency.b. insufficient variety of foods.c. diet of mostly vegetables and grains.d. low Calorie consumption. ______17. Livestock in developing countries providea. manure.b. eggs and meat.c. leather and wool.d. All of the above ______18. Biological pest control aims to do all the following excepta. maintain tolerable pest levels.b. reduce all insects to low levels.c. leave non-pest species unharmed.d. boost plants’ natural defenses. ______19. Plowing with machines, irrigating with drip systems, and are all modern agricultural methods.a. using manureb. applying chemical fertilizersc. irrigating with ditchesd. Both (a) and (b) ______20. Earth’s available arable land is being reduced bya. fast-growing human populations.b. soil erosion.c. desertification.d. All of the above ______21. All of these contribute to famine excepta. crop failure.b. green revolution.c. unequal distribution of food.d. drought. ______22. Almost __________ of the seafood consumed in the world is produced through aquaculture.a. one-halfb. one-thirdc. one-fourthd. three-fourths
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