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






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






3. 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






4. 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






5. Clear cutting - Strip cutting - selective cutting






6. Genetically engineered using recombinant DNA






7. 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






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






9. 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.






10. One farmer=100 eaters.






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






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






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






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






15. 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






16. The uniform planting of a single crop






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






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






19. 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






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






21. Solid waste from smelts






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






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






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






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






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






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






28. 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.






29. Organic macromolecules hardest to provide during a famine






30. 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






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






32. 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






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






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






35. Having not enough of something






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






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. 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






39. 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.






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






42. 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






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






44. 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






45. 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






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






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






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






49. Mix the malachite with water and 6M sulfuric acid and heat the mixture - creating a transformation reaction where the only left over matter is the sand - which is then strained out. Iron fillings are then added to the solution - a substitution react






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