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






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






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. 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;






5. 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






6. Genetically engineered using recombinant DNA






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






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






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. 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






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






12. 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






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






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






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






16. 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






17. 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.






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






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






20. Solid waste from smelts






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






22. 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






23. -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






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






25. 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






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






27. 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






28. 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






29. 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






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






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






32. 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






33. One farmer=100 eaters.






34. 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






35. 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






36. 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






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






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






39. 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






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






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






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






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






44. 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






45. 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






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






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






48. 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






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






50. Completely missing something