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 rate at which producers create organic material.






2. Consumers which eat both plants and animals.






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






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






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






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






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






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






9. The flow of water in the water table.






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






11. 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.






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






13. 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.






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






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






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






17. A variety of species living together.






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






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






20. The position of an organism on the food chain.






21. An agency created to establish regulations concerning pollutants to protect humans and the environment.






22. 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.






23. 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.






24. An international protocol designed to stabilize global warming.






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






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






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






28. 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.






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






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






31. Plants taking in nitrates from the soil.






32. A transitional area between two different ecosystems.






33. Organisms which eat other organisms.






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






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






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






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






38. The crust and upper mantle of the earth.






39. Growing only one crop at a time.






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






41. A layer of gasses surrounding the earth.






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






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






44. 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.






45. Animals which eat leaves and shoots.






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






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






48. Organisms which consume autotrophs for food.






49. An international protocol designed to protect the ozone layer by phasing out the production of CFCs and other harmful chemicals.






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