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






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






3. 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.






4. -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






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






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






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






8. 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






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






10. 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






11. The uniform planting of a single crop






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






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






14. 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






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






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






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






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






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






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






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






22. Genetically engineered using recombinant DNA






23. Having not enough of something






24. 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






25. 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






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






27. 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






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






29. 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






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






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






32. 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






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






34. 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;






35. 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.






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






37. 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






38. 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






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






40. 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






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






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






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






44. 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






45. 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






46. 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.






47. 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






48. 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.






49. The golden molecule for plants because it makes them grow - Leagues have special nitrogen fixing bacteria in their rhizomes (roots) - Three covalent bonds for N2. Stronger the covalent bonds - the harder it is to react. Nitrogen gas is inert.






50. Organic macromolecules hardest to provide during a famine