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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. Anything that harms an organism






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






3. A chart with bars






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






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






6. A nonliving part of an organism's habitat






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






8. The process by which molecules of liquid absorb energy and change to gas






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






10. The number of different species in a given area






11. Anything in the environment that is used by people






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






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






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






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






16. The pattern of overlapping food chains in an ecosystem.






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






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






19. Water stored in underground layers of soil and rock






20. Flaw in design of procedure






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






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






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






24. Mistake in following procedure






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






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






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






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






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






30. A living part of an organism's habitat






31. The effect of the IV






32. The variable that you manipulate






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






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






35. Something that breaks down into soil






36. Liphids - proteins - and carbohydrates






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






38. The rate of which a plant grows at






39. The movement or organisms from one place to another






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






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






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






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






44. Heat from the Earth's interior






45. Beginning of urban cities - switch from man power to fossil fuels - machinery and factories are prevalent






46. An organism that breaks down wastes and dead organisms






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






48. The amount of food production in a given area






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






50. Organism that is killed