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






2. Struggle between organisms to survive in a habitat with limited resources






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






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






5. Organism that is killed






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






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






8. A consumer that eats only animals






9. Illegal killing or removal of wildlife from their habitats






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






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






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






13. Anything in the environment that is used by people






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






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






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






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






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






19. Liphids - proteins - and carbohydrates






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






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






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






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






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






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






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






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






28. Moving into a population






29. A natural resource that is not replaced in a useful time frame






30. The number of different species in a given area






31. Possible to use again






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






33. The study of how living and nonliving things interact






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






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






36. The largest population that an area can support






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






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






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






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






41. The organism that the parasite lives in or on






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






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






44. The movement or organisms from one place to another






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






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






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






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






49. A relationship in which both species benefit






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