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DSST Environmental Sciences Vocab

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. An organism that breaks down wastes and dead organisms






2. A nonliving part of an organism's habitat






3. Water stored in underground layers of soil and rock






4. The continuous process by which water moves from Earth's surface to the atmosphere and back






5. The largest population that an area can support






6. Mass destruction of most species






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






8. A chart with bars






9. Possible to use again






10. Something that breaks down into soil






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






12. Wheat -bairley -corn....carbohydrates






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






14. All the members of one species in a particular area






15. The first species to populate the area






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






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






18. A resource that is able to be reused - or can be replenished quickly






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






20. People who survive by searching for wild plants and animals; always move in small groups






21. The act of restricting your food intake (or your intake of particular foods)






22. Struggle between organisms to survive in a habitat with limited resources






23. A study that compares the costs and benefits to society of providing a public good






24. Rice - corn - potatos - wheat - soy beans






25. The amount of food production in a given area






26. In an experiment - the group of participants that recieves the manipulation






27. Capable of being broken down by bacteria or other decomposers






28. Organism that does the killing






29. The process of cutting down only some trees in area






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






31. The practice of reducing energy use






32. A state of poor nutrition; lacking enough calories or variety in diet






33. The number of different species in a given area






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






35. Any form of water that falls to the Earth's surface






36. A measure of human demand on the Earth's ecosystems






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






38. Situation in which people acting individually and in their own interest use up commonly available but limited resources - creating disaster for the entire community






39. A graph that uses dots to compare rate of change over time






40. The group that does not receive the experimental treatment.






41. The rate of which a plant grows at






42. The issue where humans don't take care of the Earth.






43. The organism that benefits by living on or in a host






44. All the different populations that live together in an area






45. The variable that you manipulate






46. Moving into a population






47. The degree of hotness or coldness of a body or environment






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






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






50. A grid that displays the data plotted in a chart.