Test your basic knowledge |

DSST Environmental Science - 2

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. Chemicals that causes harm to embryos and fetuses






2. A large area heavily populated like Miami - Florida or Toledo - Ohio






3. The practice of protecting the environment






4. A virus or bacterium (organisms) that cause infectious diseases






5. A species in danger of becoming extinct in the near future






6. Concentrations of toxicants can be greatly multiplied with each step up the food chain






7. A consumer that eats both plants and animals






8. A species that is at risk of extinction






9. An organism that obtains energy by feeding on the other organisms






10. Making direct measurements






11. Are carefully controlled






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






13. Transportation systems - communications systems - water services - power supplies - and schools






14. The largest population that an area can support






15. When fish are caught faster than they can breed - causing the populatio to decrease






16. Using public transportation






17. An organism that breaks down wastes and dead organisms






18. A relationship in which one organism lives on or in a host and harms it






19. Illegal killing or removal of wildlife from their habitats






20. The amount of replacement is equal to the amount harvested






21. Habitat change and fragmentation






22. Help improve the standard of living for residents






23. The study of the natural processes that occur in the environment and how humans can affect them






24. The mating of animals in zoos or wildlife preserves






25. The number of different species in an area






26. A relationship between two species in which both species benefit






27. Watering crops

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28. Moving into a population






29. Contamination of land - water - or air






30. Viruses - bacteria and other organisms in the environment that harm human health






31. Chemical hazard that was once found in paint - young children are frequently tested for this






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






33. The process of cutting down all the trees in an area at once






34. Loud noises in the air like jack hammers - loud car stereos - etc...






35. An organism that is killed and eaten by another organism






36. A disease that has appeared in the human population for the first time or that has existed for a while but is increasing rapidly and spreading around the world






37. Process of measuring the chance that an environmental hazard will cause harm






38. Organism that carries pathogens






39. Pollution from a factory near your school






40. The loss of a natural habitat






41. By increasing the need for people to drive






42. Deals with biological hazards






43. An amount of a renewable resource that can be harvested regularly without reducing the future supply






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






45. The breaking of a habitat into smaller - isolated pieces






46. Water vapor and carbon dioxide that trap heat near the earth






47. A living part of an organism's habitat






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






49. An area with a large population of valuable ocean organisms






50. Burning fossil fuels