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






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






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






4. Mistake in following procedure






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






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






7. The variable that you manipulate






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






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






10. A close relationship between two species that benefits at least one of them






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






12. A chart with bars






13. A grid that displays the data plotted in a chart.






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






15. Liphids - proteins - and carbohydrates






16. The largest population that an area can support






17. A higer demand of that limited product the the price goes up






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






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






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






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






22. Water stored in underground layers of soil and rock






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






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






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






26. Organism that is killed






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






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






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






30. The disappearance of all members of a species from Earth






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






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






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






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






35. Anything that harms an organism






36. A consumer that eats both plants and animals






37. A nonliving part of an organism's habitat






38. Organism that does the killing






39. Possible to use again






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






41. The first species to populate the area






42. A consumer that eats only plants






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






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






45. A consumer that eats only animals






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






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






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






49. Anything in the environment that is used by people






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