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






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






3. 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.






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






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






6. An American environmentalist who is famous for promoting the ideas of environmental ethics and wildlife management.






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






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






9. The process of a substance passing directly from the solid phase to the gaseous phase - and vice versa.






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






11. The coexistence of two species using the same resource where the two will use the resource in different ways.






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






13. Consumers which eat both plants and animals.






14. All of the ecosystems on earth.






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






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






17. Growing only one crop at a time.






18. 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






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






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






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






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






23. Biomes far north in North America - Europe - and Asia which - due to very low temperatures - cannot support tree growth.






24. A group of similar organisms capable of interbreeding.






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






26. The process by which a new species is created. This process generally requires geographic isolation to prevent interbreeding between the newly emerging species and the parent species.






27. The amount of pests needed before spraying pesticides is economical.






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






29. Organisms which consume autotrophs for food.






30. An international protocol designed to stabilize global warming.






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






32. 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.






33. Modern man.






34. An international organization designed to promote free trade between countries.






35. Organisms with a nucleus.






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






37. Species which serve key roles in an ecosystem. The absence of these important organisms is detrimental to the surrounding area.






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






39. Consumers which eat decomposing organic material.






40. 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.






41. 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.






42. Single-celled organisms which lack a nucleus.






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






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






45. The crust and upper mantle of the earth.






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






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






48. Animals which eat leaves and shoots.






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






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