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 act which established and enforced acceptable levels of air pollution.






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






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






4. A type of symbiosis where one species benefit at the expense of the other.






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






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






7. The conversion of nitrates into nitrogen gas.






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






9. Any living thing on earth.






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






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






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






13. A transitional area between two different ecosystems.






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






15. Modern man.






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






17. Plants taking in nitrates from the soil.






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






19. 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.






20. The rate at which producers create organic material.






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






22. A group of similar organisms capable of interbreeding.






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






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






25. 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.






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






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






28. 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.






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






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






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






32. An international protocol designed to stabilize global warming.






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






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






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






36. 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.






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






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






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






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






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






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






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






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






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






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






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






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






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






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