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 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.






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






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






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






5. 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.






6. Consumers which eat both plants and animals.






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






8. Consumers which eat decomposing organic material.






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






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






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






12. 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.






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






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






15. A transitional area between two different ecosystems.






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






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






18. Also called that water cycle - this process describes the cycling of water throughout the environment. The stages of this cycle are evaporation - condensation - transportation - precipitation - infiltration and percolation - and run off.






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






20. 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.






21. The rate at which producers create organic material.






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






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






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






25. All of the water found on earth.






26. Single-celled organisms which lack a nucleus.






27. A UN conference held in Rio de Janeiro. The conference decided to protect biodiversity - reduce pollution emissions and greenhouse gasses - and promote sustainable development.






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






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






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






31. 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.






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






33. 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.






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






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






36. Animals which eat grass and roots.






37. A layer of gasses surrounding the earth.






38. Growing more than one crop at a time.






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






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






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






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






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






44. All of the ecosystems on earth.






45. Organisms which produce their own food.






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






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






48. The flow of water in the water table.






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






50. Precipitation which does not reach the soil but is instead collected by plants.