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






2. Consumers which eat only other animals.






3. 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.






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






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






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






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






8. 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






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






10. A bloom of phytoplankton in a body of water caused by an abnormal increase in nutrients. This process depletes the water's oxygen level - killing off other aquatic organisms.






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






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






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






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






15. The uppermost atmospheric layer. Here satellites orbit the earth.






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






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






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






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. A group of similar organisms capable of interbreeding.






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






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






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






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






25. A layer of gasses surrounding the earth.






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






27. Plants taking in nitrates from the soil.






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






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






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






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






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






33. The process of planting different plant species right next to each other to maximize one's yield.






34. Growing more than one crop at a time.






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






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






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






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






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






40. 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.






41. 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






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






43. All of the water found on earth.






44. 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.






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






46. 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.






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






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






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






50. 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.







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests