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






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






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






4. Evolution in one organism due to change in a related organism.






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






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






7. The conversion of nitrates into nitrogen gas.






8. Any living thing on earth.






9. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.






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






11. The flow of water in the water table.






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






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






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






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






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






17. 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.






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






19. Organisms which create their own food out of inorganic (abiotic) substances.






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






21. The infiltration of harmful chemicals - particles - or biological matter into the atmosphere which endanger living organisms. Pollutants include sulfur and nitrogen oxides - ammonia - and chlorofluorocarbons. Although there are natural sources for th






22. A greenhouse gas which also plays a key role in regulating ozone levels.






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






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






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






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






27. 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.






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






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






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






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






32. Consumers which eat both plants and animals.






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






34. All of the ecosystems on earth.






35. 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.






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






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






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






39. 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.






40. The UN's first major conference on environmental issues.






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






42. 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.






43. Species which react quickly to an environmental change and therefore can be used to diagnose a particular ecosystem.






44. Growing only one crop at a time.






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






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






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






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






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






50. The spraying of pesticides to keep produce from any injuries or damage.







Sorry!:) No result found.

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