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 act created to protect endangered and threatened species.






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






3. An act which set standards for the amount of pollution in water.






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






5. 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.






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






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






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






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






10. 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.






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






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






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






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






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






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. All of the ecosystems on earth.






18. The cloudiness of a liquid due to small suspended particles.






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






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






21. All of the water found on earth.






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






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






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






25. Organisms with a nucleus.






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






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






28. Growing more than one crop at a time.






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






30. A transitional area between two different ecosystems.






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






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






33. 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.






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






35. 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.






36. 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.






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






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






39. A layer of gasses surrounding the earth.






40. Animals which eat leaves and shoots.






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






42. The flow of water in the water table.






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






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






45. Single-celled organisms which lack a nucleus.






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






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






48. Consumers which eat only other animals.






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






50. A forest near the equator with heavy rainfall and a great diversity of plant and animal life. Although a mere 2% of the earth is covered with these forests - they contain 50-80% of earth's land species.