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. The process of a gas transforming into a liquid.






2. An international protocol designed to stabilize global warming.






3. 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.






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






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






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






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






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






9. Different species living in close contact with each other.






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






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






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






13. A group of similar organisms capable of interbreeding.






14. All of the ecosystems on earth.






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






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






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






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






19. 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.






20. Consumers which eat decomposing organic material.






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






22. 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






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






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






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






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






27. An act which required the EPA to set standards for drinking water.






28. The loss of water vapor from leaves.






29. A transitional area between two different ecosystems.






30. 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.






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






32. Surface run-off caused by melted snow.






33. A type of symbiosis where each species will benefit from interacting with the other.






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






35. 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.






36. The flow of water in the water table.






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






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






39. A community of similar living organisms largely affected by the area's climate.






40. 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.






41. All of the water found on earth.






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






43. 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.






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






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






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






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






48. Modern man.






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






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