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






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






3. The process of surface water entering the soil. This ensures that plants have adequate access to water.






4. 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.






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






6. 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.






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






8. The process by which a new species is created. This process generally requires geographic isolation to prevent interbreeding between the newly emerging species and the parent species.






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






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






11. All of the water found on earth.






12. Growing more than one crop at a time.






13. A group of similar organisms capable of interbreeding.






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






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






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






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






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






19. 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.






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






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






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






23. The loss of water vapor from leaves.






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






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






26. An influential book by Rachel Carson which helped begin the environmental movement.






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






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






29. A greenhouse gas. Although it is a natural part of the carbon cycle - the atmospheric concentration of this gas has increased due to the burning of fossil fuels.






30. Consumers which eat decomposing organic material.






31. A layer of gasses surrounding the earth.






32. 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.






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






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






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






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






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






39. Precipitation which does not reach the soil but is instead collected by plants.






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






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






42. Growing only one crop at a time.






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






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






45. Animals which eat leaves and shoots.






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






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






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






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






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







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