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






2. One farmer=100 eaters.






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






4. Mining method- mountain's forests are clear-cut and the timber is sold - topsoild is removed - and then the rock is blasted away to expose the coal for extraction. Overburden is placed back on the mountaintop. Primarily for coal in the Appalachian Mo






5. 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






6. A naturally occurring solid element or inorganic compound with a crystal structure - a specific chemical composition - and distinct physical properties.






7. Long term information is unknown - Can take over surrounding ecosystem - Pest-killing toxin also kills insects that should not and are not meant to be killed such as monarch butterflies - Pollen can be carried to nearby plants by wind thus making th






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






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






10. Organic macromolecules hardest to provide during a famine






11. Strip mining - open pit mining - mountain top removal






12. 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.






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






14. 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






15. Systematically tests different approaches and aims to improve methods and find ideal over time - Advantages: can be highly effective; works with each specific environment; can protect species; can provide minimum impact - Disadvantages: difficult to






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






17. 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






18. Solid waste from smelts






19. Completely missing something






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






21. Uses the idea that 'the enemy of one's enemy is one's friend' - Battles pests and weeds with organisms that eat or infect them - Can be extremely effective and inexpensive






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






23. 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






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






25. 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






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






27. Mining method- mining underground coal deposits - in which shafts are dug deeply into the ground and networks of tunnels are dug to follow coal seams.






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






29. 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






30. 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






31. 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






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. 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.






34. Clear cutting - Strip cutting - selective cutting






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






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






37. Advantages: removes the least amount of unwanted material so less waste - Disadvantages: potential collapse; sinkholes; acid drainage; pollutes groundwater; risk of injury/death from dynamite blasts - natural gas explosions - inhalation of toxic gass






38. 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






39. Choosing valuable trees only - lots of reseeding - transportation is hard.






40. 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






41. -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






42. The use of heavy machinery to remove huge amounts of earth to expose COAL or MINERALS - which are mined out directly.






43. Manages resource harvesting so as to minimize impact on ecosystem and ecological processes that provide the resource - Advantages: can protect certain areas; can restore habitats; considers surroundings; allows timber harvesting while preserving inte






44. 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






45. There is now more nitrate in the soil and water than ever - sometimes at unsafe levels - Corn harvests have improved






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






47. Soy beans have been genetically modified for better traits. 'Round up Ready' soy beans have made it so that weed killer 'round up' can be sprayed around the plants and kill all the weeds but not the soy bean plants. 'round up ready soy beans' were cr






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






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






50. Natural fertilizers from decomposing solid organic matter; have lots of nitrogen







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