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DSST Environmental Science: Land Use

Subjects : dsst, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Cut trees shortly after they go through their fastest stage of growth (which is during their intermediate age) - Advantages: maximizes timber production over time - Disadvantages: trees get cut before they mature; alters forest ecology; eliminates ha






2. Recycle batteries - Send large amounts of metal to scrap yards/businesses instead of to landfills (ex. cars - fridges - dishwashers - etc.) - Recycle old electronics like phones and computers to prevent more mining of minerals like tantalum that are






3. Now makes up 80% of corn in the US - Benefits: Contains naturally occurring pesticide - Increases production - could feed more people - Grow more per square area - Doesn't spoil as quickly - Bigger - tastier






4. Completely missing something acquired from food; usually protein or vitamin C






5. One farmer=100 eaters.






6. Mix the malachite with water and 6M sulfuric acid and heat the mixture - creating a transformation reaction where the only left over matter is the sand - which is then strained out. Iron fillings are then added to the solution - a substitution react






7. Genetically engineered using recombinant DNA






8. More expensive then clear cutting - leaves rows of trees for reseeding/ future harvesting.






9. A single piece of land gardened collectively by a group of people.






10. Food assistance given to an area. Can take away the incentive to produce food in that area. Distribution is an issue.






11. way to enhance nutrient-limited soils - Inorganic fertilizers- mined or synthetically manufactured mineral supplements - Organic fertilizers consist of the remains or wastes of organisms that include animal mancure - organic fertilizers can improve






12. A severe shortage of food (as through crop failure) resulting in violent hunger and starvation and death






13. To reclaim is to make things level - and to get something growing and prevent erosion - If the U.S were to try to reclaim - it would cost tax payers about 2 trillion dollars.






14. Worthless material that surrounds a wanted mineral in an ore deposit.






15. When sulfide minerals in newly exposed rock surfaces react with oxygen and rainwater to produce sulfuric acid - causing runoff as it leaches metals from the rocks






16. Technology was not able to profitably remove the copper from the malachite






17. Goal to guarantee an adequate - safe - nutritious - and reliable food supply available to all people at all times






18. Do not naturally occur in the environment - but are synthesized by man. Since all these compounds have carbon and hydrogen atoms as the basis of their molecule (as do living plants and animals) - they are referred to as organic compounds to form pest






19. The surface soil that must be moved away to get at coal seams and mineral deposits






20. Cheapest - easiest transportation removal of lumber - Most environmentally harmful - takes all trees - leaves nothing






21. Organic macromolecules hardest to provide during a famine






22. Heating ore beyond its melting point and combining it with other metals or chemicals ( process of separating).






23. A fossil fuel composed of organic matter that was compressed under very high pressure to form a dense - solid carbon structure.






24. Not enough of some vitamin/mineral/essential thing in food






25. By far the best method for managing pests - Uses chemical pesticides - biocontrol - AND diversity - Not monoculture; things are planted in a mosaic so that if pests attack all of the corn in one area there is still more corn somewhere else - Proven t






26. Made by mixing the remains or wastes of organisms including animal manure (essential) - crop residues - fresh vegetation - and compost






27. 1990 Clean Air Act amendments encouraged clean-burning low-sulfur coal led to more mining in Appalachia -dumping ton of debris sinto valley degrades and destroys areas of habitat -social and health impacts. loose rock tumbles down into homes - overl






28. Technology that has vastly increased the amount of food production since the agricultural revolution; currently 1 farmer for every 129 eaters






29. -boosts yields by intensifying irrigation and introducing synthetic fertilizers - while the advent of chemical pesticides reduce competition from weeds and herbivory by crop pests - Industrial agriculture works best under the condition of monoculture






30. Completely missing something






31. A variation of clear-cutting in which a strip of trees is clear-cut along the contour of the land - with the corridor narrow enough to allow natural regeneration within a few years. After regeneration - another strip is cut above the first - and so o






32. A mineral or grouping of minerals from which we extract metals - most metals are found in ore - Copper - iron - lead gold - and aluminum - Used in electronic components of computers - cell phones - DVD players.






33. Makes money - remove resources from its original location - Firewood - Paper - Lumber - Charocoal - Gem - Hunting - Medicine






34. The uniform planting of a single crop






35. Can hurt other species - methods used to control other species can become invasive species themselves - Ex. Australia released a virus to kill the excessive rabbits; Australians brought in cane toads to kill beetles on their sugar cane - BUT the toa






36. (Insecticides - Herbicides/ Fungicides) - Artificial chemicals used to kill pests/ insects/plants/fungi






37. Shafts are excavated deep into the ground - and networks of tunnels are dug or blasted out to follow deposits of the mineral. requires removal of the overburden - Used for metals ( zinc - lead - nickel - tin - gold - copper) and coal - Most dangerous






38. Fertilizers - promote plant growth by providing essential nutrients like nitrogen or phosphorus; increases crop yield - Combines/Machinery - allows farmers to work much faster and more efficiently; increases crop yield - Pesticides - kill insects - p






39. The FSC (Forest Stewardship Council) examine the practices of firms and rate them against criteria for sustainability - Grant sustainable forest certification to forests - companies - and products produced using methods they consider sustainable.






40. Corn yield has increased dramatically in the US since the 1920s because it was in the 1920s that GM corn started to be developed






41. Locally-based socio-economic model of agriculture and food distribution. also refers to a particular network or association of individuals who have pledged to support one or more local farms - with growers and consumers sharing the risks and benefits






42. In the last 100 years - humans have doubled the amount of organic nitrogen in the biosphere by artificial synthesis of ammonia.






43. About one million people on Earth 10 -000 years ago. (The Agricultural revolution). Worlds population crossed into 7 billion now - It is unlikely that we will double the 7 billion. We will hit 9 to 11 billion people.






44. Combination of different pest management techniques combined in a specific way best for the place they are being used.






45. Nicotine - Alcohol - Cocaine - if it can kill you - it can kill other living things.






46. Maximum Sustainable Yield - Ecosystem-based Management - Adaptive Management






47. Cutting the trees down - burning them. Nutrients from the ash go to soil. You have a farmland for ranching cattle or farming soybeans.






48. A mining technique that involves digging a gigantic hole and removing the desire ORE - along with waste rock that surrounds the ore.






49. - the turning and loosening of soil for the planting of crops






50. Clear cutting - Strip cutting - selective cutting







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