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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. An environmental factor that causes a population to decrease






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






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






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






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






6. A consumer that eats only plants






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






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






9. A living part of an organism's habitat






10. Organism that is killed






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






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






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






14. The organism that the parasite lives in or on






15. The study of how living and nonliving things interact






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






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






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






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






20. Heat from the Earth's interior






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






22. A material that cannot be recycled or reused






23. Leaving a population






24. The first species to populate the area






25. Moving into a population






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






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






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






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






30. The movement or organisms from one place to another






31. Water stored in underground layers of soil and rock






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






33. The number of different species in an area






34. A relationship in which both species benefit






35. An organism that breaks down wastes and dead organisms






36. Rice - corn - potatos - wheat - soy beans






37. The variable that you manipulate






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






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






40. Organism that does the killing






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






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






43. A graph that uses dots to compare rate of change over time






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






45. The effect of the IV






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






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






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






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






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