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 protects certain lands as national parks.






2. Organisms which thrive in low nutrient environments and usually have slow growth rates.






3. Any living thing on earth.






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






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






6. 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.






7. Growing more than one crop at a time.






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






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






10. 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.






11. 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






12. All of the ecosystems on earth.






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






14. 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.






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






16. Surface run-off caused by melted snow.






17. Consumers which eat both plants and animals.






18. Organisms with a nucleus.






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






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






21. Animals which eat leaves and shoots.






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






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






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






25. 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.






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






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






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






29. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.






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






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






32. Modern man.






33. 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.






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






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






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






37. A greenhouse gas. Although it is a natural part of the carbon cycle - the atmospheric concentration of this gas has increased due to the burning of fossil fuels.






38. Single-celled organisms which lack a nucleus.






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






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






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






42. The rate at which producers create organic material.






43. 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.






44. The loss of water vapor from leaves.






45. 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.






46. Plants taking in nitrates from the soil.






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






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






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






50. A transitional area between two different ecosystems.