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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. 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






2. 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






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






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






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






6. 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.






7. 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






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






9. Having not enough of something






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






11. The uniform planting of a single crop






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






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






14. Completely missing something






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






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






17. -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






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






19. 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






20. 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






21. Foods derived from genetically modified organisms. Genetically modified organisms have had specific changes introduced into their DNA by genetic engineering techniques. include selective breeding; plant breeding. Typically - genetically modified food






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






23. Clear cutting - Strip cutting - selective cutting






24. 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






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






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






27. 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






28. One farmer=100 eaters.






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






30. Solid waste from smelts






31. 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






32. Organic macromolecules hardest to provide during a famine






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






34. 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






35. 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






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






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






38. Genetically engineered using recombinant DNA






39. 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






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






41. 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






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






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






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






45. Malachite contains sulfides which become strongly acidic when mixed with water and thus pollutes water






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






47. Bio-control can be extremely cost effect - Bio-control can harm other animals - The cane toads control cane beetle in Carribean






48. 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






49. 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.






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