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

2. 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

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

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. Organic macromolecules hardest to provide during a famine

6. Solid waste from smelts

7. 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

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

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

10. 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

11. Clear cutting - Strip cutting - selective cutting

12. 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

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

14. The uniform planting of a single crop

15. 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.

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

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

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

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

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

21. 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.

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

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

24. Completely missing something

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

26. 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

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

28. 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.

29. 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.

30. 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

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

32. 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.

33. 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

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

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

36. One farmer=100 eaters.

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

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

39. 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

40. 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

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

42. 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.

43. 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

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

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

46. 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

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

48. By far the best method for managing pests - Uses chemical pesticides - biocontrol - AND diversity - Not monoculture; things are planted in a mosaic so that if pests attack all of the corn in one area there is still more corn somewhere else - Proven t

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

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