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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. Organism that does the killing






2. The organism that the parasite lives in or on






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






4. A relationship that involves one organism living on or inside another organism and harming it






5. When a large fraction of the resource has been used up






6. The process of changing free nitrogen gas into a usable form






7. A consumer that eats both plants and animals






8. The amount of food production in a given area






9. A habitat in which the freshwater of a river meets the salt water of an ocean






10. The process in which the changes that make organisms better suited to their environments develop






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






12. An organism that obtains energy by feeding on other organisms






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






14. The introduction of pesticides and high-yield grains and better management during the 1960s and 1970s which greatly increased agricultural productivity






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






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






17. A living part of an organism's habitat






18. A relationship in which both species benefit






19. The study of how living and nonliving things interact






20. Illegal killing or removal of wildlife from their habitats






21. Heat from the Earth's interior






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






23. The number of different species in an area






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






25. The number of different species in a given area






26. An interaction in which one organism kills and eats another






27. Flaw in design of procedure






28. An energy rich substance (such as coal - oil - or natural gas) formed from the remains of organisms






29. An organism's particular role - or how it makes its living






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






31. A higer demand of that limited product the the price goes up






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






33. Water stored in underground layers of soil and rock






34. The theory that increasing carbon dioxide in the atmosphere will raise Earth's average temperature






35. The rate of which a plant grows at






36. Behaviors and physical characteristics of species that allow them to live successfully in their environment






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






38. Something that does not completely break down into the soil






39. Mistake in following procedure






40. Mass destruction of most species






41. Organism that is killed






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






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






44. An environmental factor that causes a population to decrease






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






46. The effect of the IV






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






48. A chart with bars






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






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