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 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.






2. 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.






3. Also called that water cycle - this process describes the cycling of water throughout the environment. The stages of this cycle are evaporation - condensation - transportation - precipitation - infiltration and percolation - and run off.






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






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






6. All of the ecosystems on earth.






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






8. All of the water found on earth.






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






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






11. Growing more than one crop at a time.






12. The crust and upper mantle of the earth.






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






14. 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.






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






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






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






18. 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.






19. The loss of water vapor from leaves.






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






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






22. Growing only one crop at a time.






23. 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.






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






25. A group of similar organisms capable of interbreeding.






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






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






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






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






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






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






32. Consumers which eat only other animals.






33. 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.






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






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






36. The infiltration of harmful chemicals - particles - or biological matter into the atmosphere which endanger living organisms. Pollutants include sulfur and nitrogen oxides - ammonia - and chlorofluorocarbons. Although there are natural sources for th






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






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






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






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






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






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






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






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






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






46. A transitional area between two different ecosystems.






47. 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.






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






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






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