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 crust and upper mantle of the earth.






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






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






4. Consumers which eat only other animals.






5. Growing more than one crop at a time.






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






7. Consumers which eat decomposing organic material.






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






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






10. A forest characterized by clearly differentiated seasons - such as the trees loosing leaves in the fall and heavy snowfall in the winter.






11. An especially potent greenhouse gas emitted during production and transportation of fossil fuels - decomposition of organic matter - and herds of livestock.






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






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






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






15. A group of similar organisms capable of interbreeding.






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






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






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






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






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






21. Organisms which eat other organisms.






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






23. 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.






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






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






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






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






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






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






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






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






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






33. Organisms which produce their own food.






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






35. 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.






36. 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.






37. The process of a gas transforming into a liquid.






38. 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






39. 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.






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






41. Modern man.






42. Animals which eat leaves and shoots.






43. 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.






44. The conversion of nitrates into nitrogen gas.






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






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






47. Precipitation which does not reach the soil but is instead collected by plants.






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






49. 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.






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