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






2. Solid waste from smelts






3. -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






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






5. 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.






6. 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






7. 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






8. 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






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






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






11. The uniform planting of a single crop






12. Completely missing something






13. 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






14. 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






15. 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






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






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






18. 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






19. 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.






20. Genetically engineered using recombinant DNA






21. 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






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






23. 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.






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






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






26. 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






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






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






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






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






31. To reclaim is to make things level - and to get something growing and prevent erosion - If the U.S were to try to reclaim - it would cost tax payers about 2 trillion dollars.






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






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






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






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






37. One farmer=100 eaters.






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. 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






40. 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






41. 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.






42. 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;






43. Organic macromolecules hardest to provide during a famine






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






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






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






47. Having not enough of something






48. 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.






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






50. 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