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






2. 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.






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






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






5. Growing more than one crop at a time.






6. Growing only one crop at a time.






7. Organisms which consume autotrophs for food.






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






9. The rate at which producers create organic material.






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






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






12. The position of an organism on the food chain.






13. 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.






14. The flow of water in the water table.






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






16. Populations characterized by large size - long lifespan - and few offspring.






17. Also called that water cycle - this process describes the cycling of water throughout the environment. The stages of this cycle are evaporation - condensation - transportation - precipitation - infiltration and percolation - and run off.






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






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






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






21. 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.






22. 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.






23. The loss of water vapor from leaves.






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






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






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






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






28. A transitional area between two different ecosystems.






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






30. 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.






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






32. 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






33. A situation where a layer of warmer air traps lower - cooler air - causing pollution to collect near the ground.






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






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






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






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






38. Any living thing on earth.






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






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






41. 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.






42. An act which required the EPA to set standards for drinking water.






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






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






46. An international protocol designed to stabilize global warming.






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






48. 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.






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






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