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 international organization designed to promote free trade between countries.






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






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






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






5. Growing more than one crop at a time.






6. Modern man.






7. All of the water found on earth.






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






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






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






11. A type of farming where the farmer will grow just enough crops to satisfy his family's needs for the next year.






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






13. Organisms which consume autotrophs for food.






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






15. Growing only one crop at a time.






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






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






18. An international protocol designed to stabilize global warming.






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






20. Excess water which cannot be infiltrated into the soil and instead flows along the ground.






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






22. The southern-most continent - of which 98% is ice. This continent includes 70% of the world's fresh water - and 90% of the world's ice. Although the average temperature is -49






23. A type of symbiosis where each species will benefit from interacting with the other.






24. 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.






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






26. 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.






27. 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






28. The loss of water vapor from leaves.






29. A transitional area between two different ecosystems.






30. 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.






31. Animals which eat leaves and shoots.






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






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






34. Organisms with a nucleus.






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






36. 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.






37. 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.






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






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






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






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






42. Animals which eat grass and roots.






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






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






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






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






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






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






49. 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.






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