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 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.






2. 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






3. Organisms with a nucleus.






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






5. Consumers which eat decomposing organic material.






6. 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.






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






8. Consumers which eat both plants and animals.






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






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






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






12. 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.






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






14. 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.






15. Animals which eat grass and roots.






16. The second atmospheric layer. The ozone layer is found here - increasing the temperature with altitude.






17. A variety of species living together.






18. 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.






19. All of the water found on earth.






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






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






22. The rapid increase of harmful algae in a body of water.






23. 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.






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






25. 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.






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






27. Political organizations not affiliated with the government which try to bring about social change.






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






29. Consumers which eat only other animals.






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






31. An international protocol designed to stabilize global warming.






32. The study of the interaction between organisms and their environment.






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






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






35. The rate at which producers create organic material.






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






37. Surface run-off caused by melted snow.






38. A layer of gasses surrounding the earth.






39. A transitional area between two different ecosystems.






40. Integrating rows of trees alongside crops to provide mulch and shade - retain water in the soil - and promote sustainable land use.






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






42. Growing more than one crop at a time.






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






44. A community of species interacting with their nonliving (abiotic) environment.






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






46. The loss of water vapor from leaves.






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






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






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






50. 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.