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. The process by which the sun's energy converts liquid water to water vapor in the atmosphere.






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






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






4. The crust and upper mantle of the earth.






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






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






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






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






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






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






11. A shubland found primarily in the South-Western United States and Mexico. Fire plays a predominant role in the life-cycle of the plants in this area - the seeds of which will sprout only after a fire.






12. Growing more than one crop at a time.






13. Political organizations not affiliated with the government which try to bring about social change.






14. Precipitation which does not reach the soil but is instead collected by plants.






15. 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.






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






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






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






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






20. Any living thing on earth.






21. Organisms with a nucleus.






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






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






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






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






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






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






28. Growing only one crop at a time.






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






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






31. An extinct hominid species with near the same brain capacity as modern man believed to use fire and stone tools - live a hunter/gatherer lifestyle - and speak a language.






32. Consumers which eat both plants and animals.






33. Animals which eat leaves and shoots.






34. Organisms which produce their own food.






35. 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.






36. The flow of water in the water table.






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






38. 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.






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






40. 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.






41. An influential book by Rachel Carson which helped begin the environmental movement.






42. The conversion of nitrates into nitrogen gas.






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






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






45. A rainforest in the temperate zone which receives heavy rainfall.






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






47. 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.






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






49. The middle atmospheric layer. Meteors burn up after entering this layer.






50. An extinct hominid species believed to exhibit the first example of full-time bipedalism.