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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 number of different species in a given area






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






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






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






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






6. The first species to populate the area






7. A relationship in which both species benefit






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






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






10. An organism that breaks down wastes and dead organisms






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






12. The practice of reducing energy use






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






14. An environmental factor that causes a population to decrease






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






16. Leaving a population






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






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






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






20. The number of different species in an area






21. Heat from the Earth's interior






22. Mistake in following procedure






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






24. The group that does not receive the experimental treatment.






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






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






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






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






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






30. Water stored in underground layers of soil and rock






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






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






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






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






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






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






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






38. Organism that is killed






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






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






41. Resources supplied by nature






42. Anything in the environment that is used by people






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






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






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






46. Illegal killing or removal of wildlife from their habitats






47. A nonliving part of an organism's habitat






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






49. A consumer that eats both plants and animals






50. Possible to use again