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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 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.






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






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






4. Solid waste from smelts






5. Having not enough of something






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






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






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






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






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






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






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






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






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






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






16. 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






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






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






19. 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






20. -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






21. 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






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






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






24. 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






25. 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






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






27. 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






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






29. 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






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






31. 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






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






33. 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






34. 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






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






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






37. 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;






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






39. 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






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






41. 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






42. 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.






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






44. 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






45. 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






46. 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






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






48. 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






49. 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






50. Clear cutting - Strip cutting - selective cutting