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






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






3. An international protocol designed to stabilize global warming.






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






5. The rate at which producers create organic material.






6. All of the ecosystems on earth.






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






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






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






10. 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.






11. Plants taking in nitrates from the soil.






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






13. A transitional area between two different ecosystems.






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






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






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






17. The loss of water vapor from leaves.






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






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






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






21. Animals which eat leaves and shoots.






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






23. Consumers which eat decomposing organic material.






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






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






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






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






28. 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.






29. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.






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






31. 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.






32. Growing more than one crop at a time.






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






34. A layer of gasses surrounding the earth.






35. Organisms which eat other organisms.






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






37. A group of similar organisms capable of interbreeding.






38. Populations characterized by small size - short lifespan - and lots of offspring.






39. Surface run-off caused by melted snow.






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






41. Organisms which consume autotrophs for food.






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






43. Single-celled organisms which lack a nucleus.






44. Organisms with a nucleus.






45. Organisms which produce their own food.






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






47. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.






48. The UN's first major conference on environmental issues.






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






50. Different species living in close contact with each other.