Test your basic knowledge |

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. Strip mining - open pit mining - mountain top removal






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






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






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






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






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






7. 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






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






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






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






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






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






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






14. 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






15. Clear cutting - Strip cutting - selective cutting






16. Food assistance given to an area. Can take away the incentive to produce food in that area. Distribution is an issue.






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






18. 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






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






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






21. 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






22. 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.






23. Having not enough of something






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






25. 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.






26. Organic macromolecules hardest to provide during a famine






27. Solid waste from smelts






28. 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






29. 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






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






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






34. 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






35. One farmer=100 eaters.






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






37. Completely missing something






38. The uniform planting of a single crop






39. -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






40. 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






41. 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






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






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






44. Genetically engineered using recombinant DNA






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. 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.






47. 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






48. 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






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






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