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






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






3. All of the water found on earth.






4. An international protocol designed to stabilize global warming.






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






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






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






8. The loss of water vapor from leaves.






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






10. 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.






11. Surface run-off caused by melted snow.






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






13. Consumers which eat only other animals.






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






15. 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.






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






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






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






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






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






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






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






23. All of the ecosystems on earth.






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






25. 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.






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






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






28. Any living thing on earth.






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






30. A group of similar organisms capable of interbreeding.






31. Organisms which consume autotrophs for food.






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






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






34. The flow of water in the water table.






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






36. Consumers which eat both plants and animals.






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






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






39. 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.






40. The conversion of nitrates into nitrogen gas.






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






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






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






44. 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.






45. Biomes with less than 10 inches of rain a year. Foliage is scarce in these areas - and remaining plants and animals work hard to conserve the little water they receive.






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






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






48. Animals which eat grass and roots.






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






50. 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.







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests