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






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






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






4. 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.






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






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






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






8. 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.






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






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






11. A UN conference that addressed the growing population problem.






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






13. Consumers which eat both plants and animals.






14. 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.






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






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






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






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






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






20. Animals which eat grass and roots.






21. 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.






22. 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.






23. The loss of water vapor from leaves.






24. Organisms which eat other organisms.






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






26. 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.






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






28. Organisms which produce their own food.






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






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






31. Populations characterized by small size - short lifespan - and lots of offspring.






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






33. 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.






34. A type of farming where the farmer will grow crops both to fulfill his family's needs for the next year and to sell on the market.






35. 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.






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






37. Consumers which eat decomposing organic material.






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






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






40. Water found in estuaries. This water is a mixture of saltine ocean water and fresh water - usually from a river or stream.






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






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. Organisms which consume autotrophs for food.






44. Growing only one crop at a time.






45. Single-celled organisms which lack a nucleus.






46. The crust and upper mantle of the earth.






47. The rate at which producers create organic material.






48. A type of symbiosis where one species benefit at the expense of the other.






49. 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






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