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. Surface run-off caused by melted snow.






2. The decomposition of organic nitrogen into inorganic ammonium. This process is also called mineralization.






3. The rate at which producers create organic material.






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






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






6. All of the water found on earth.






7. Consumers which eat decomposing organic material.






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






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






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






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






12. An international protocol designed to stabilize global warming.






13. 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.






14. 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






15. An international convention which created the framework for protecting the ozone layer.






16. 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.






17. Average expected birth rate for 1 -000 women.






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






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






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






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






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






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






24. 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.






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






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






27. The conversion of nitrates into nitrogen gas.






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






29. 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.






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






31. Organisms with a nucleus.






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






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






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






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






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






37. Organisms which thrive in high nutrient environments - especially those with plenty of carbon.






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






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






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






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






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. 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.






44. Growing more than one crop at a time.






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






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






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






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






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






50. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.






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