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 UN's first major conference on environmental issues.






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






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






4. 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.






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






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






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






8. 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.






9. 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.






10. An extinct hominid species believed to have the same brain capacity as modern man and use many different weapons.






11. Plants taking in nitrates from the soil.






12. The rate at which producers create organic material.






13. The crust and upper mantle of the earth.






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






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






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






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






18. All of the ecosystems on earth.






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






20. 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.






21. Organisms which eat other organisms.






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






23. A transitional area between two different ecosystems.






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






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






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






27. Organisms which consume autotrophs for food.






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






29. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.






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






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






32. A group of similar organisms capable of interbreeding.






33. Animals which eat leaves and shoots.






34. 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.






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






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






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






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






39. A community of species interacting with their nonliving (abiotic) environment.






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






41. The flow of water in the water table.






42. 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.






43. The conversion of nitrates into nitrogen gas.






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






45. Organisms with a nucleus.






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






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






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






49. 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






50. Organisms which produce their own food.