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






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






3. Anything that harms an organism






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






5. Possible to use again






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






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






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






9. An organism that breaks down wastes and dead organisms






10. Heat from the Earth's interior






11. The number of different species in a given area






12. Moving into a population






13. Mass destruction of most species






14. The largest population that an area can support






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






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






17. Organism that does the killing






18. Liphids - proteins - and carbohydrates






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






20. Water stored in underground layers of soil and rock






21. The number of different species in an area






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






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






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






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






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






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






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






29. Something that breaks down into soil






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






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






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






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






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






35. A chart with bars






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






37. A consumer that eats both plants and animals






38. A consumer that eats only plants






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






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






41. Leaving a population






42. Resources supplied by nature






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






44. The variable that you manipulate






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






46. Anything in the environment that is used by people






47. A series of events in which one organism eats another and obtains energy






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






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






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