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






2. The amount of variation among organisms living in a particular ecosystem. The loss of this key characteristic leads to a reduction in ecosystem efficiency and the ability of species to adapt to new situations.






3. Consumers which eat decomposing organic material.






4. A bloom of phytoplankton in a body of water caused by an abnormal increase in nutrients. This process depletes the water's oxygen level - killing off other aquatic organisms.






5. Areas with only enough rainfall for grasses to grow. As a result - most animals are grazers - such as buffalo.






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






7. Populations characterized by large size - long lifespan - and few offspring.






8. A partially enclosed part of the ocean with rivers or streams flowing into it.






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






10. 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.






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






12. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.






13. 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.






14. The crust and upper mantle of the earth.






15. An international organization designed to promote free trade between countries.






16. A transitional area between two different ecosystems.






17. Organisms which consume autotrophs for food.






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






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. Consumers which eat only other animals.






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






22. The process of a gas transforming into a liquid.






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






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






25. Organisms with a nucleus.






26. The spraying of pesticides to prevent a pest problem before it happens.






27. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.






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






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






30. Organisms which produce their own food.






31. Consumers which eat both plants and animals.






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






33. Populations characterized by small size - short lifespan - and lots of offspring.






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






35. The flow of water in the water table.






36. A community of species interacting with their nonliving (abiotic) environment.






37. Different species living in close contact with each other.






38. Exceptionally acidic (low pH) rain. This phenomenon is caused mainly by emissions of carbon dioxide - sulfur dioxide - and nitrogen oxide which react with water particles in the air.






39. The rate at which producers create organic material.






40. An unstable form of oxygen which protects the earth from UV radiation. Although naturally occurring in the stratosphere (upper atmosphere) - in the lower atmosphere this gas acts as a pollutant.






41. Single-celled organisms which lack a nucleus.






42. Forests found in the northern regions of North America - Europe - and Asia characterized by freezing winters and warmer summers. These forests lie just below the tree line.






43. An act which required the EPA to set standards for drinking water.






44. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.






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






46. 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.






47. The uppermost atmospheric layer. Here satellites orbit the earth.






48. Average expected birth rate for 1 -000 women.






49. A form of management which attempts to satisfy both the needs of humans and those of wildlife in the best way possible for both parties.






50. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.