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DSST Environmental Science - 2

Subjects : dsst, science
  • 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. All the members of one species in a particular area

2. Concentrations of toxicants can be greatly multiplied with each step up the food chain

3. When fish are caught faster than they can breed - causing the populatio to decrease

4. One way zoos and aquariums help increase wildlife populations

5. A natural resource that is not replaced in a useful time frame

6. The series of changes that occur in an area where no soil or organisms exist

7. A relationship in which one organism lives on or in a host and harms it

8. Building up not out

9. The series of changes that occur in an area where the ecosystem has been disturbed - but where soil and organisms still exist

10. A relationship between two species in which one species benefits and the other is neither helped nor harmed

11. An amount of a renewable resource that can be harvested regularly without reducing the future supply

12. Sikhote-Alin mountains and the Siberian tigers living there are separated from other mountains by this

13. An environment that provides the things an organism needs to live - grow - and reproduce

14. Using public transportation

15. A disease that has appeared in the human population for the first time or that has existed for a while but is increasing rapidly and spreading around the world

16. The disappearance of all members of a species from Earth

17. The disappearance of a particular population from a given area - but not from the entire species globally

18. Bumps on the roots of certain plants

19. A nonliving part of an organism's habitat

20. Businesses are arranged in a long row along a roadway - with no main community

21. Burning fossil fuels

22. Global phenomenon that has caused some organisms to move toward the poles and to higher altitude

23. Refers to an increase in Earth's average surface temperature

24. Help improve the standard of living for residents

25. By increasing the need for people to drive

26. A region that has many different types of organism is described as having a high level of this

27. The loss of a natural habitat

28. Cooking oil - fuel - and medicines

29. Chemical hazard that was once found in paint - young children are frequently tested for this

30. A group of land ecosystems with similar climates and organisms

31. Shift of population from countryside to cities

32. The number of different species in an area

33. Fires that are set by humans

34. Deals with biological hazards

35. Causes a cooling effect

36. Loud noises in the air like jack hammers - loud car stereos - etc...

37. Chemicals that cause cancer

38. A species that could become endangered in the near future

39. Soil - fresh water - wild animals - and timber

40. Rising sea level

41. A series of events in which one organism eats another and obtains energy

42. The study of how living things interact with each other and their environment

43. Transportation systems - communications systems - water services - power supplies - and schools

44. Chemicals that causes harm to embryos and fetuses

45. Has the highest amount of species diversity

46. The mating of animals in zoos or wildlife preserves

47. A carnivore that feeds on the bodies of dead organisms

48. A species that influences the survival of many others in an ecosystem

49. Any substance that poses a chemical hazard

50. A natural pattern in which species diversity generally increases toward the equator