Question : A volume of seawater equal to the volume of the oceans cycles through submarine hydrothermal systems roughly every _________.
A. year
B. 5,000 years
C. 10 million years
D. one billion years
Answer:C
Question : A volume of seawater equal to the volume of the oceans cycles through submarine hydrothermal systems roughly every _________.
A. year B. 5,000 years C. 10 million years D. one billion years