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






2. Having not enough of something






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






4. The uniform planting of a single crop






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






6. 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






7. Solid waste from smelts






8. 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






9. 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






10. 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






11. Clear cutting - Strip cutting - selective cutting






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






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






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






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






16. 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;






17. 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






18. 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






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






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. Harvesting only mature trees of certain species and size; usually more expensive then clear-cutting but it is less disruptive for wildlife and often better for forest regeneration






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. 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.






24. 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






25. Organic macromolecules hardest to provide during a famine






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






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






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






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






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






31. -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






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






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






34. 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






35. 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






36. 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






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






38. 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






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






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






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






42. 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






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






44. 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






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






47. 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






48. 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






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






50. 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