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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 trapping of heat near Earth's surface by certain gases (carbon dioxide - water vapor and other gases) in the atmosphere






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






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






4. A consumer that eats both plants and animals






5. The effect of the IV






6. Leaving a population






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






8. An organism that breaks down wastes and dead organisms






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






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






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






12. Organism that does the killing






13. Resources supplied by nature






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






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






16. Anything that harms an organism






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






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






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






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






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






22. Wheat -bairley -corn....carbohydrates






23. The typical weather pattern in an area over a long period of time






24. The number of different species in an area






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






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






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






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






29. The number of different species in a given area






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






31. A material that cannot be recycled or reused






32. The largest population that an area can support






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






34. A living part of an organism's habitat






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






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






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






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






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






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






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






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






43. Moving into a population






44. Heat from the Earth's interior






45. A relationship in which both species benefit






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






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






48. The variable that you manipulate






49. The movement or organisms from one place to another






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