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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. All the different populations that live together in an area






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






3. The variable that you manipulate






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






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






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






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






8. Anything in the environment that is used by people






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






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






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






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






13. A nonliving part of an organism's habitat






14. The issue where humans don't take care of the Earth.






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






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






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






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






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






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






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






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






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






24. Heat from the Earth's interior






25. Moving into a population






26. A resource that is not able to be reused - or cannot be replenished quickly






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






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






29. Flaw in design of procedure






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






31. Organism that is killed






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






33. An environmental factor that causes a population to decrease






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






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






36. The movement or organisms from one place to another






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






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






39. A living part of an organism's habitat






40. Mass destruction of most species






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






42. Illegal killing or removal of wildlife from their habitats






43. A material that cannot be recycled or reused






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






45. Something that breaks down into soil






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






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






48. Resources supplied by nature






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






50. A chart with bars