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 protocol designed to stabilize global warming.






2. 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






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






4. The area between the troposphere and the stratosphere. Here the temperature reverses from decreasing to increasing with altitude.






5. 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.






6. 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






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






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






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






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






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






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






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






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






15. 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.






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






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






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






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






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






21. 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.






22. Plants taking in nitrates from the soil.






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






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






25. The flow of water in the water table.






26. A forest near the equator with heavy rainfall and a great diversity of plant and animal life. Although a mere 2% of the earth is covered with these forests - they contain 50-80% of earth's land species.






27. 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.






28. An act created to protect endangered and threatened species.






29. 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.






30. Animals which eat leaves and shoots.






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






32. Consumers which eat both plants and animals.






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






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






35. Growing only one crop at a time.






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






37. Animals which eat grass and roots.






38. A principle that states that two species competing for a single resource cannot coexist. One species will inevitably gain an advantage over the other - causing the looser either to migrate or to become extinct.






39. The loss of water vapor from leaves.






40. A rainforest in the temperate zone which receives heavy rainfall.






41. Organisms with a nucleus.






42. A variety of species living together.






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






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






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






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






47. Surface run-off caused by melted snow.






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






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






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