| http://www.w3.org/ns/prov#value | - Without these currents much of the north and south temperate lands would have been buried in ice, while the largest portion of the continents would have been so intensely heated as perhaps to be unsuited for the development of the higher forms of animal life, since we have shown (in Chapters X and XI) how delicate is the balance and how narrow the limits of temperature which are required.
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