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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. 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






2. 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






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






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






5. -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






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






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






8. 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






9. 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






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






11. 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






12. Clear cutting - Strip cutting - selective cutting






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






14. 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






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






16. 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;






17. Systematically tests different approaches and aims to improve methods and find ideal over time - Advantages: can be highly effective; works with each specific environment; can protect species; can provide minimum impact - Disadvantages: difficult to






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






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






21. Soy beans have been genetically modified for better traits. 'Round up Ready' soy beans have made it so that weed killer 'round up' can be sprayed around the plants and kill all the weeds but not the soy bean plants. 'round up ready soy beans' were cr






22. 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.






23. 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






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






25. One farmer=100 eaters.






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






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






28. 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.






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






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






31. 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






32. Organic macromolecules hardest to provide during a famine






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






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






35. 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






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






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






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






39. 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.






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






42. The uniform planting of a single crop






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






44. 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






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






47. 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






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






49. 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.






50. Having not enough of something