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 convention which created the framework for protecting the ozone layer.






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






3. Modern man.






4. Organisms which consume autotrophs for food.






5. A group of similar organisms capable of interbreeding.






6. An extinct hominid species believed to exhibit the first example of full-time bipedalism.






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






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






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






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






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






12. 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.






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






14. Condensed water vapor which falls to earth. This comes in many forms - such as rain - snow - ice - and hail.






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






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






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






18. Any living thing on earth.






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






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






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






22. 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.






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






24. Consumers which eat only other animals.






25. All of the water found on earth.






26. A variety of species living together.






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






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






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






31. 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.






32. All of the ecosystems on earth.






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






34. Organisms which eat other organisms.






35. The crust and upper mantle of the earth.






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






37. An unstable form of oxygen which protects the earth from UV radiation. Although naturally occurring in the stratosphere (upper atmosphere) - in the lower atmosphere this gas acts as a pollutant.






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






39. A transitional area between two different ecosystems.






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






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






42. Organisms which create their own food out of inorganic (abiotic) substances.






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






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






45. The rapid increase of harmful algae in a body of water.






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






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






48. The flow of water in the water table.






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






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