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






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






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






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






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






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






7. A community of similar living organisms largely affected by the area's climate.






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






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






10. 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.






11. Organisms which consume autotrophs for food.






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






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






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






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






16. 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.






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






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






19. An international convention which created the framework for protecting the ozone layer.






20. The spraying of pesticides to prevent a pest problem before it happens.






21. The crust and upper mantle of the earth.






22. Grasslands with short - widely spaced trees and no canopy - allowing for an unbroken layer of grasses beneath.






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






24. A group of similar organisms capable of interbreeding.






25. Growing only one crop at a time.






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






27. All of the water found on earth.






28. 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.






29. 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.






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






31. An international protocol designed to stabilize global warming.






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






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






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






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






36. Plants taking in nitrates from the soil.






37. 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






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






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






40. A variety of species living together.






41. 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.






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






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






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






45. The loss of water vapor from leaves.






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






47. A transitional area between two different ecosystems.






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






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






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