The Earth's rivers constantly carry dissolved salts into its oceans. Clearly, therefore, by taking the resulting increase in salt levels in the oceans over thepast hundred years and then determininghow many centuries of such increases it would have taken the ocean to reach current salt levels from a hypothetical initial salt-free state, the maximum age of the Earth's oceans can be accurately estimate.
Which of the following is the assumption on which the argument depends?
(A) The quantities
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Which of the following is the assumption on which the argument depends?
(A) The quantities
...
