A cometary model of the formation of Earth's ocean must include the chemical difference between the ________ in comet ice and that in Earth's water
A) hydrogen
B) oxygen
C) nitrogen
D) carbon
A
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An individual carbon-oxygen bond is polar. Yet carbon dioxide, CO2, which has two carbon-oxygen bonds, is nonpolar because
A) the molecule has an even number of electrons. B) it has a greater symmetry. C) the electron-pulls of the two oxygen atoms are equal and opposite. D) Two of the above are reasonable.
Which kind of development would be promoted if a government worked on finding a balance between economic security, environmental protection, and social equity?
a. Cornucopian b. Sustainable c. Biocentric d. neoclassical
Without gravity, a ball thrown at an upward angle would follow a straight-line path. Because of gravity, however, in 2 s it is below the straight line a distance of
A. 10 m. B. more than 20 m. C. 20 m. D. 15 m.
Without glancing at a map, we can guess that the coordinates 178 E longitude, 20 S latitude are likely
A) just east of the International Date Line in the Pacific Ocean. B) in the Pacific Ocean just north of the equator. C) in the Pacific Ocean just west of the International Date Line. D) just west of the prime meridian in the Atlantic Ocean. E) just south of the equator in the Atlantic Ocean.