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






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






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






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






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






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






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






8. 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.






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






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






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






12. The conversion of nitrates into nitrogen gas.






13. Growing only one crop at a time.






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






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






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






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






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






19. The coexistence of two species using the same resource where the two will use the resource in different ways.






20. A group of similar organisms capable of interbreeding.






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






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






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






24. 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.






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






26. Animals which eat grass and roots.






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






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






29. Organisms which produce their own food.






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






31. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.






32. 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.






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






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






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






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






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






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






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






40. Organisms with a nucleus.






41. Consumers which eat decomposing organic material.






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






43. A layer of gasses surrounding the earth.






44. 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.






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






46. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.






47. An international protocol designed to stabilize global warming.






48. Consumers which eat both plants and animals.






49. The crust and upper mantle of the earth.






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