Science is... in the broadest sense of organized, objective knowledge. - Richard Hartshorne

Geographers and agricultural economists have become increasingly interested in recent years in studying the associations of crops and livestock in different types of agriculture, in contrast to the separate consideration of individual crops or products.

Geography is not an infant subject, born out of the womb of American geology a few decades ago, which each new generation of American students may change around at will.

The unique purpose of geography is to seek comprehension of the variable character of areas in terms of all the interrelated features which together form that variable character.