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






2. 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.






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






4. 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






5. Animals which eat grass and roots.






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






7. Plants taking in nitrates from the soil.






8. Growing only one crop at a time.






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






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






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






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






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. Integrating rows of trees alongside crops to provide mulch and shade - retain water in the soil - and promote sustainable land use.






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






16. The process of a gas transforming into a liquid.






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






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






19. 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.






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






21. 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.






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






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






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






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






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






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






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






29. The conversion of nitrates into nitrogen gas.






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






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






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






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






34. Organisms which produce their own food.






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






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






37. 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






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






39. Modern man.






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






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






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






43. Organisms which consume autotrophs for food.






44. An international protocol designed to stabilize global warming.






45. Single-celled organisms which lack a nucleus.






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






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






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






49. Animals which eat leaves and shoots.






50. 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.







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