Under what conditions would there be no change of level?
Is it probable that these conditions exist to any great extent?
Why, then, are not the changes of level observed?
Why is the bed of the sea most likely to experience the change of elevation?
Why are the continents most favorably situated to undergo depression?
What are the sources of heat upon which climate depends?
Does the interior temperature sensibly affect the present climates?
What cause may be assigned for the changes of climate which are known to have taken place?
What are the relations of land by which the highest temperature would be produced?
How would this distribution of land affect the temperature of the waters of the ocean?