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






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






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






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






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






6. 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






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






8. Growing only one crop at a time.






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






10. Growing more than one crop at a time.






11. Modern man.






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






13. 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.






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






15. 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.






16. A variety of species living together.






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






18. Animals which eat leaves and shoots.






19. Plants taking in nitrates from the soil.






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






21. Organisms which eat other organisms.






22. An international protocol designed to stabilize global warming.






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






24. 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.






25. Consumers which eat only other animals.






26. A group of similar organisms capable of interbreeding.






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






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






29. An act which called for the careful examination of new chemicals to ensure they are safe for their intended uses.






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






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






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






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






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






35. Animals which eat grass and roots.






36. Single-celled organisms which lack a nucleus.






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






38. The flow of water in the water table.






39. The loss of water vapor from leaves.






40. The crust and upper mantle of the earth.






41. All of the water found on earth.






42. 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.






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






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






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






46. 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.






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






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






49. Consumers which eat decomposing organic material.






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