Test your basic knowledge |

DSST Environment And Humanity

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. An act which established and enforced acceptable levels of air pollution.






2. Biomes with less than 10 inches of rain a year. Foliage is scarce in these areas - and remaining plants and animals work hard to conserve the little water they receive.






3. The spraying of pesticides to keep produce from any injuries or damage.






4. The process of planting different plant species right next to each other to maximize one's yield.






5. The process of planting trees in between other crops.






6. A theory that our current ecological problems are a product of deeper social problems.






7. A type of farming where the farmer will fell and burn down trees to grow crops. After a few years - he will move on and continue the process.






8. An act which set standards for the amount of pollution in water.






9. The process by which a new species is created. This process generally requires geographic isolation to prevent interbreeding between the newly emerging species and the parent species.






10. A greenhouse gas which also plays a key role in regulating ozone levels.






11. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.






12. A type of farming where the farmer will grow crops both to fulfill his family's needs for the next year and to sell on the market.






13. The position of an organism on the food chain.






14. The process by which pollutants are carried by flowing water - such as a river.






15. A forest found in temperate regions with warm summers - cool winters - and plenty of rainfall. These kinds of forests are characterized by evergreens and deciduous trees.






16. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.






17. The loss of water vapor from leaves.






18. A law designed to locate toxic waste sites - gauge their pollution level - and ensure these sites are taken care of properly.






19. A philosophy that extends ethics to non-humans. Under this system - animals - plants - and other aspects of the environment are seen as being deserving of justice and consideration.






20. Growing more than one crop at a time.






21. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.






22. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.






23. Organisms which eat other organisms.






24. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.






25. All of the ecosystems on earth.






26. An act which protects certain lands as national parks.






27. Organisms which create their own food out of inorganic (abiotic) substances.






28. The rapid increase of harmful algae in a body of water.






29. The UN's first major conference on environmental issues.






30. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.






31. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.






32. A UN conference that addressed the growing population problem.






33. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.






34. A type of symbiosis where one species benefit at the expense of the other.






35. The cloudiness of a liquid due to small suspended particles.






36. An agency created to establish regulations concerning pollutants to protect humans and the environment.






37. A variety of species living together.






38. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.






39. Single-celled organisms which lack a nucleus.






40. An extinct hominid species believed to be the last common ancestor between man and apes.






41. An extinct hominid species believed to have long - ape-like arms; have a brain capacity half that of modern men; and use primitive tools.






42. An international protocol designed to protect the ozone layer by phasing out the production of CFCs and other harmful chemicals.






43. The amount of pests needed before spraying pesticides is economical.






44. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.






45. The southern-most continent - of which 98% is ice. This continent includes 70% of the world's fresh water - and 90% of the world's ice. Although the average temperature is -49






46. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.






47. An act requiring federal agencies to detail the impact of proposed environmental policies.






48. Consumers which eat only other animals.






49. A group of similar organisms capable of interbreeding.






50. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.