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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. A relationship in which both species benefit






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






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






4. The time when human begins first domesticated plants and animals and no longer relied entirely on hunting and gathering.






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






6. A consumer that eats only plants






7. Anything that harms an organism






8. Organism that is killed






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






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






11. The number of different species in a given area






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






13. The study of how living and nonliving things interact






14. A consumer that eats both plants and animals






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






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






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






18. Possible to use again






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






20. The number of different species in an area






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






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






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






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






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






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






27. The first species to populate the area






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






29. The organism that the parasite lives in or on






30. A graph that uses line segments to show changes that occur over time






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






32. The condition in which human needs are met in such a way that a human population can survive indefinitely






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






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






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






36. The movement or organisms from one place to another






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






38. An organism that breaks down wastes and dead organisms






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






40. Leaving a population






41. The effect of the IV






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






43. Countries with strong economies and a high quality of life






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






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






46. An environmental factor that causes a population to decrease






47. The variable that you manipulate






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






49. Evaluation of the short-term and long-term risks associated with a particular activity or hazard






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