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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. Organic macromolecules hardest to provide during a famine






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






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






4. 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






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






6. The golden molecule for plants because it makes them grow - Leagues have special nitrogen fixing bacteria in their rhizomes (roots) - Three covalent bonds for N2. Stronger the covalent bonds - the harder it is to react. Nitrogen gas is inert.






7. Having not enough of something






8. 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






9. 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.






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






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






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






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






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






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






16. 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






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






18. 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






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






20. 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.






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






22. 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






23. One farmer=100 eaters.






24. 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






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






26. 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






27. Solid waste from smelts






28. Controversial logging practice where all trees in an area are uniformly cut down - used by foresters to create certain types of forest ecosystems and to promote select species that requires an abudnace of sunlight or grow in large - even--age stands






29. Completely missing something






30. 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.






31. 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






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






33. 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






34. 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






35. Cheap - But - removes all overburden (trees - soil - rocks - etc.); obliterates natural communities b/c everything has been removed; leads to erosion; causes sulfuric acid run-off;






36. Genetically engineered using recombinant DNA






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






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






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






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






41. 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.






42. -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






43. Educational - Maintain biodiversity - Aesthetics - Oxygen - Improve quality of life - Co2 to O2 - Shade - Habitat/ biodiversity - Erosion - Clean water - Soil enrichment






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






45. 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






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






47. 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






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






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






50. 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