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 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.






2. Organisms with a nucleus.






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






4. Growing more than one crop at a time.






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






6. All of the ecosystems on earth.






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






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






9. Modern man.






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






11. 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.






12. 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.






13. A community of similar living organisms largely affected by the area's climate.






14. The process of surface water entering the soil. This ensures that plants have adequate access to water.






15. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.






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






17. A layer of gasses surrounding the earth.






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






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






20. The place of an organism in an ecosystem - such as what it eats and how it interacts with other organisms.






21. The first atmospheric layer. Most weather and pollution occurs here - and the temperature decreases with altitude.






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






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






24. A type of symbiosis where one species will benefit while the other will be neither benefit or be harmed.






25. An international convention which created the framework for protecting the ozone layer.






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






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






28. The loss of water vapor from leaves.






29. 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.






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






31. 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.






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






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






34. An act created to protect endangered and threatened species.






35. All of the water found on earth.






36. Evolution in one organism due to change in a related organism.






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






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






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






40. The flow of water in the water table.






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






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






43. 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.






44. 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.






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






46. The infiltration of harmful chemicals - particles - or biological matter into the atmosphere which endanger living organisms. Pollutants include sulfur and nitrogen oxides - ammonia - and chlorofluorocarbons. Although there are natural sources for th






47. 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.






48. A variety of species living together.






49. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.






50. An international protocol designed to stabilize global warming.