There were multiple sources of water that contributed to the ocean. How was the majority of the
ocean's water formed?
a. The condensation of a cloud composed of dust and gas from exploded stars
b. The condensation and cooling of water vapor
c. The infiltration of comets
d. Run-off from continental land masses
ANS: B
Although the Earth (and other planets in our solar system) was formed via the condensation of a dust
and gas ridden cloud, this was not the direct cause of the formation of the ocean. Water vapor began
escaping from Earth's interior. Over time this vapor condensed and cooled. Additional water was
brought to Earth by comets. Information can be found in the section Stars and Seas.
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Indicate whether this statement is true or false.
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Indicate whether the statement is true or false
Between 1960 and 2010, atmospheric greenhouse CO2 has increased by
A) 400 ppm.
B) 320 ppm.
C) 80 ppm.
Data that can be differentiated by a ranking relationship are called:
A. interval data B. nominal data C. ratio data D. ordinal data