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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. 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






2. 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.






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






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






5. 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






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






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






8. 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






9. 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






10. 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;






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






12. 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






13. 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






14. One farmer=100 eaters.






15. 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






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






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






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






19. Solid waste from smelts






20. 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






21. 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






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






23. 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






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






25. Completely missing something






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






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






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






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






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






31. 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






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






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






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






35. Clear cutting - Strip cutting - selective cutting






36. 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






37. 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






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






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






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






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






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






43. Genetically engineered using recombinant DNA






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






45. 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






46. 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






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






48. 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






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






50. Having not enough of something