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 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.






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






3. Excess water which cannot be infiltrated into the soil and instead flows along the ground.






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






5. 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.






6. Consumers which eat decomposing organic material.






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






8. The combination of evaporation from the ocean - lakes - and other bodies of water and transpiration - the loss of water from plants.






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






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






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






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






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






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






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






16. 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.






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






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






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






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






21. Forests found in the northern regions of North America - Europe - and Asia characterized by freezing winters and warmer summers. These forests lie just below the tree line.






22. Growing only one crop at a time.






23. 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






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






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






26. Surface run-off caused by melted snow.






27. Animals which eat leaves and shoots.






28. Consumers which eat both plants and animals.






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






30. 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.






31. 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.






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






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






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






35. Plants taking in nitrates from the soil.






36. A layer of gasses surrounding the earth.






37. Modern man.






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






39. 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.






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






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






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






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






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






45. The loss of water vapor from leaves.






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






47. A transitional area between two different ecosystems.






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






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






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