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






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






3. A transitional area between two different ecosystems.






4. Organisms which eat other organisms.






5. 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.






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






7. A theory that our current ecological problems are a product of deeper social problems.






8. 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.






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






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






11. The conversion of nitrates into nitrogen gas.






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






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






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






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






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






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






18. 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.






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






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






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






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






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






24. An international protocol designed to stabilize global warming.






25. A group of similar organisms capable of interbreeding.






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






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






28. 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.






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. Plants taking in nitrates from the soil.






31. Animals which eat grass and roots.






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






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






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






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






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






37. The process by which certain kinds of bacteria convert atmospheric nitrogen gas into ammonia - a form accessible to living creatures.






38. A layer of gasses surrounding the earth.






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






40. All of the water found on earth.






41. Any living thing on earth.






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






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






44. Consumers which eat both plants and animals.






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






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






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






48. An act created to protect endangered and threatened species.






49. Organisms which consume autotrophs for food.






50. Growing more than one crop at a time.