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 rainforest in the temperate zone which receives heavy rainfall.






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






3. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.






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






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






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






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






8. 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.






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






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






11. Growing more than one crop at a time.






12. 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.






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






14. 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.






15. 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






16. 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.






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






18. Plants taking in nitrates from the soil.






19. The study of the interaction between organisms and their environment.






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






21. All members of a species which live in the same area.






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






23. Organisms which eat other organisms.






24. 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.






25. The crust and upper mantle of the earth.






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






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






28. Organisms which consume autotrophs for food.






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






30. A layer of gasses surrounding the earth.






31. A law designed to locate toxic waste sites - gauge their pollution level - and ensure these sites are taken care of properly.






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






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






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






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






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






37. The biggest atmospheric layer. Without ozone - UV radiation causes ionization and the auroras in this layer.






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






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






40. The oxification of ammonia by certain bacterium into nitrite and later into nitrates - which can then be used by plants.






41. 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.






42. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.






43. 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






44. Consumers which eat only other animals.






45. Consumers which eat both plants and animals.






46. 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.






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






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






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






50. The rate at which producers create organic material.