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 transitional area between two different ecosystems.






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






3. The amount of pests needed before spraying pesticides is economical.






4. Single-celled organisms which lack a nucleus.






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






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






7. Surface run-off caused by melted snow.






8. 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.






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






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






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






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






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






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






16. An international protocol designed to stabilize global warming.






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






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






19. The loss of water vapor from leaves.






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






21. All of the ecosystems on earth.






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






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






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






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






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






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






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






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






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






31. Animals which eat leaves and shoots.






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






33. Organisms which consume autotrophs for food.






34. Exceptionally acidic (low pH) rain. This phenomenon is caused mainly by emissions of carbon dioxide - sulfur dioxide - and nitrogen oxide which react with water particles in the air.






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






36. The process by which the sun's energy converts liquid water to water vapor in the atmosphere.






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






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






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






41. The cycling and reusing of elements and molecules (such as water - nitrogen - and phosphorus) that are essential to life.






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






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






44. The biggest atmospheric layer. Without ozone - UV radiation causes ionization and the auroras in this layer.






45. A forest found in temperate regions with warm summers - cool winters - and plenty of rainfall. These kinds of forests are characterized by evergreens and deciduous trees.






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






47. Modern man.






48. 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.






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






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







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