Test your basic knowledge |

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. The largest population that an area can support

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

3. Amount of land each person uses

4. An organism that breaks down wastes and dead organisms

5. The process of cutting down all the trees in an area at once

6. The most effective way of preserving biodiversity by protecting whole ecosystems

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

8. The reason why tigers living in warmer climates have thinner fur than tigers living in cool climates

9. The organism that does the killing in a predation interaction

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

11. A consumer that eats only plants

12. Sex - weight - and health issues

13. Plan to establish an 8000 kilometer long strip of land to rejoin fragments of tiger habitat

14. Chemicals that cause cancer

15. A nonliving part of an organism's habitat

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

17. Using public transportation

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

19. The mating of animals in zoos or wildlife preserves

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

21. The struggle between organisms to survive as they attempt to use the same limited resource

22. The study of the natural processes that occur in the environment and how humans can affect them

23. A consumer that eats only animals

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

25. A species in danger of becoming extinct in the near future

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

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

28. Bumps on the roots of certain plants

29. 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

30. Viruses - bacteria and other organisms in the environment that harm human health

31. A behavior or physical characteristic that allows an organism to live successfully in its environment

32. Contamination of land - water - or air

33. Causes a cooling effect

34. A group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce

35. Burning fossil fuels

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

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

38. Has the highest amount of species diversity

39. The most direct way in which biodiverstiy can provide a source of income

40. Land that is sparsely populated and has few buildings or roads

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

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

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

44. The number of different species in an area

45. Moving into a population

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

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

48. An organism that obtains energy by feeding on the other organisms

49. A species that is at risk of extinction

50. Taking in carbon dioxide from the atmosphere during photosynthesis