Spreading Rates Along Mid-Ocean Ridges Have ________

question 18

Multiple Choice

Spreading rates along mid-ocean ridges have ________.

• A)been remarkably constant through time
• B)changed through time,but are the same everywhere on Earth today
• C)changed through time,and today vary between 1 and 10 m/yr
• D)changed through time,and today vary between 1 and 10 cm/yr

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