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DSST Environmental Science: Land Use

Subjects : dsst, science
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 turning and loosening of soil for the planting of crops

2. The uniform planting of a single crop

3. 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

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

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

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

7. 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

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

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

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

12. 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

13. 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

14. Organic macromolecules hardest to provide during a famine

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

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

17. 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

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

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. 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. 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

23. One farmer=100 eaters.

24. Clear cutting - Strip cutting - selective cutting

25. 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

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

27. 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

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

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

30. 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

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

32. 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

33. 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

34. 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

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

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

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

38. Genetically engineered using recombinant DNA

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

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

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

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. 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.

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. 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

46. 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

47. 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.

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

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

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