Why do geologists use the radiometric age of meteorites as a guide to age of the solar system?
A) The meteorites have compositions close to Earth materials, so we assume they formed at the same time.
B) The meteorites date the time of formation of a dead planet and don't have anything to do with the age of the solar system.
C) The meteorites have been isolated in the cold vacuum of space since their formation, so they have seen no significant heating since the time of their formation.
D) The geologists are guessing because they yield some of the oldest radiometric ages.
C
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In Ontario, most precipitation that falls to the surface as rain originally formed as which precipitation type?
A. rain B. freezing rain C. ice pellets D. snow
What factor accounts for the slow return of carbon dioxide to the atmosphere?
a. geological uplift b. burial of calcium carbonate shells and skeletons in ocean sediments c. increase of solubility with depth d. photosynthesis by surface organisms e. sediment dissolution
According to the final pages of the text, the three central issues of environmentalism are:
a) sustainability, human health, and wilderness conservation. b) conservation, environmental justice, and solidarity. c) sustainability, environmental justice, and the beauty of ecology. d) conservation, the beauty of ecology, and the environmental sociological imagination.
Astronomers believe that asteroids are remnants of a planet that disintegrated after a collision with a comet
a. True b. False