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 forest found in temperate regions with warm summers - cool winters - and plenty of rainfall. These kinds of forests are characterized by evergreens and deciduous trees.






2. A group of similar organisms capable of interbreeding.






3. A type of farming where the farmer will fell and burn down trees to grow crops. After a few years - he will move on and continue the process.






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






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






6. 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.






7. 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.






8. Organisms with a nucleus.






9. 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.






10. 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.






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






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






13. A variety of species living together.






14. 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






15. Organisms which eat other organisms.






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






17. The cloudiness of a liquid due to small suspended particles.






18. Growing more than one crop at a time.






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






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






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






22. Animals which eat leaves and shoots.






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






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






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






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






27. 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.






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






29. The spraying of pesticides to prevent a pest problem before it happens.






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






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






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






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






34. 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.






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






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






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






38. An act which established and enforced acceptable levels of air pollution.






39. An international protocol designed to stabilize global warming.






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






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






42. All of the ecosystems on earth.






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






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






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






46. Plants taking in nitrates from the soil.






47. 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






48. The crust and upper mantle of the earth.






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






50. Organisms which produce their own food.