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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 series of predictable changes that occur in a community over time






2. Organism that is killed






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






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






5. Illegal killing or removal of wildlife from their habitats






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






7. A consumer that eats only plants






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






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






10. Something that breaks down into soil






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






12. An organism that breaks down wastes and dead organisms






13. Mass destruction of most species






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






15. An environmental factor that causes a population to decrease






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






17. The variable that you manipulate






18. The study of how living and nonliving things interact






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






20. Wheat -bairley -corn....carbohydrates






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






22. Anything that harms an organism






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






24. The degree of hotness or coldness of a body or environment






25. The number of different species in an area






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






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






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






29. An organism that can make it's own food






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






31. The practice of reducing energy use






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






33. Mistake in following procedure






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






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






36. The first species to populate the area






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






38. Type of graph most often used for categorical data






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






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






41. A group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce






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






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






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






45. The rate of which a plant grows at






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






47. A graph that uses line segments to show changes that occur over time






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






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






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