Test your basic knowledge |

AP Environmental Science

Subjects : science, ap
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 point at which 50 percent of the test organisms show a negative effect from a toxin.






2. Piles of gangue - which is the waste material that results from mining.






3. The part of the wide lower course of a river where its current is met by the tides.






4. A symbiotic relationship in which both species benefit.






5. The accumulation of a substance - such as a toxic chemical - in various tissues of a living organism.






6. The cultivation of a single crop on a farm or in a region or country; a single - homogeneous culture without diversity or dissension.






7. When soil becomes water-logged and then dries out - and salt forms a layer on its surface.






8. The area or environment where an organism or ecological community normally lives or occurs.






9. The degree to which a substance is biologically harmful.






10. The process of soil particles being carried away by wind or water. Erosion moves the smaller particles first and hence degrades the soil to a coarser - sandier - stonier texture.






11. The process by which - according to Darwin's theory of evolution - only the organisms best adapted to their environment tend to survive and transmit their genetic characteristics in increasing numbers to succeeding generations - while those less adap






12. A climate variation that takes place in the tropical Pacific about every three to seven years - for a duration of about one year.






13. Sunlight.






14. The second-purest form of coal.






15. A soil horizon; the layer below the O layer is called the A layer. The A layer is formed of weathered rock - with some organic material; often referred to as topsoil.






16. Non-moving sources of pollution - such as factories.






17. The cleanest-burning coal; almost pure carbon.






18. The number of children a couple must have in order to replace themselves in a population.






19. The process in which animals (and plants!) breathe and give off carbon dioxide from cellular metabolism.






20. Graphical representations of populations' ages.






21. A usually triangular alluvial deposit at the mouth of a river.






22. The number of live births per 1 -000 members of the population in a year.






23. Species that originate and live - or occur naturally - in an area or environment.






24. The biological treatment of wastewater in order to continue to remove biodegradable waste.






25. The process in which plants absorb ammonium (NH3) - ammonia ions (NH4+) - and nitrate ions (NO3) through their roots.






26. Any compound that releases hydrogen ions when dissolved in water. Also - a water solution that contains a surplus of hydrogen ions.






27. The result of a pathogen invading a body.






28. An effect that results from long -term exposure to low levels of toxin.






29. The amount of energy that plants pass on to the community of herbivores in an ecosystem.






30. Smog resulting from emissions from industry and other sources of gases produced by the burning of fossil fuels.






31. The phenomenon whereby the Earth's atmosphere traps solar radiation - caused by the presence in the atmosphere of gases such as carbon dioxide - water vapor - and methane that allow incoming sunlight to pass through - but absorb heat radiated back fr






32. When companies are allowed to buy permits that allow them a certain amount of discharge of substances into certain environmental outlets. If they can reduce their amount of discharge - they are allowed to sell the remaining portion of their permit to






33. A system of vertical and horizontal air circulation predominating in tropical and subtropical regions and creating major weather patterns.






34. The point at which 50 percent of the test organisms die from a toxin.






35. Occurs when infection causes a change in the state of health.






36. The practice of alternating the crops grown on a piece of land - for example - corn one year - legumes for two years - and then back to corn.






37. Ozone that exists in the trophosphere.






38. Radioactive wastes that produce high levels of ionizing radiation.






39. The conversion of atmospheric nitrogen into compounds - such as ammonia - by natural agencies or various industrial processes.






40. Organisms in the first stages of succession.






41. A process in which cold - often nutrient-rich - waters from the ocean depths rise to the surface.






42. When the majority of a building's occupants experience certain symptoms that vary with the amount of time spent in the building.






43. The day-to-day variations in temperature - air pressure - wind - humidity - and precipitation mediated by the atmosphere in a given region.






44. The gradual breakdown of rock into smaller and smaller particles - caused by natural chemical - physical - and biological factors.






45. Gave the EPA power to set emission standards for major sources of noise - including transportation - machinery - and construction.






46. Areas where cutting has occurred and a new - younger forest has arisen.






47. Air currents caused by the vertical movement of air due to atmospheric heating and cooling.






48. Smog resulting from emissions from industry and other sources of gases produced by the burning of fossil fuels - especially coal.






49. A method of supplying irrigation water through tubes that literally drip water onto the soil at the base of each plant.






50. The finest soil - made up of particles that are less than 0.002 mm in diameter.