Test your basic knowledge |

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






2. The first species to populate the area






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






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






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






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






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






8. Wheat -bairley -corn....carbohydrates






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






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






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






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






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






14. Organism that does the killing






15. An organism that breaks down wastes and dead organisms






16. A nonliving part of an organism's habitat






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






18. Type of graph most often used for categorical data






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






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






21. Mistake in following procedure






22. The effect of the IV






23. The study of how living and nonliving things interact






24. A consumer that eats only animals






25. Anything that harms an organism






26. Anything in the environment that is used by people






27. The number of different species in an area






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






29. A consumer that eats only plants






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






31. Mass destruction of most species






32. The act of restricting your food intake (or your intake of particular foods)






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






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






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






36. Water stored in underground layers of soil and rock






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






38. The movement or organisms from one place to another






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






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






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






42. The number of different species in a given area






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






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






45. Something that breaks down into soil






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






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






48. The amount of food production in a given area






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






50. The organism that the parasite lives in or on