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






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






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






4. A close relationship between two species that benefits at least one of them






5. A consumer that eats both plants and animals






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






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






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






9. Moving into a population






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






11. The effect of the IV






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






13. Mass destruction of most species






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






15. The practice of reducing energy use






16. A nonliving part of an organism's habitat






17. The variable that you manipulate






18. The study of the impact of humans on the environment






19. A resource that is either always available or is naturally replaced in a relatively short time






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






21. Anything in the environment that is used by people






22. The community of organisms that live in a particular area along with their nonliving surroundings






23. The process by which a gas changes to a liquid






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






25. An organism that breaks down wastes and dead organisms






26. Type of graph most often used for categorical data






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






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






29. Organism that does the killing






30. The series of predictable changes that occur in a community over time






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






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






33. Farmers who raise food and animals mainly to feed their own families






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






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






36. Wheat -bairley -corn....carbohydrates






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






38. Anything that harms an organism






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






40. A consumer that eats only plants






41. A graph that highlights segments of a circle to show simple distribution patterns






42. The amount of food production in a given area






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






44. Measure of quantity of food produced on a given area of land with limited inputs of energy and resources






45. Water stored in underground layers of soil and rock






46. The practice of growing - breeding - and caring for plants and animals that are used for food - clothing - transportation - and other uses






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






48. A material that cannot be recycled or reused






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






50. Countries with less productive economies and a lower quality of life