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THE WORLD WE LIVE IN 



PROBLEM IV. HOW DOES MAN CONTROL HIS 

 ENVIRONMENT? 



Natural environment. Besides the chemical elements in our 

 surroundings, temperature, absence or presence of water, the kind 

 of earth surface, the presence of different salts in the soil or water, 

 all may play a part in determining what kind of life will be 

 present in a given locality. Mountain, plain, desert, lake, woods, 

 tropical jungle, each has its own inhabitants and these inhabitants 

 are limited to life in that particular part of the world. 



Photo by Doaglas-Xesmlth & Associates 

 A city apartment house. Why do we consider this a favorable artificial environment ? 



Man, while he is like other animals in requiring heat, light, 

 water, and food, differs from them in that he has come to live in a 

 more or less artificial environment. Men who lived on the earth 

 thousands of years ago did not wear clothes or have elaborate 

 homes of wood, brick, or stone. They did not use fire, nor did they 

 eat cooked foods. But, by slow degrees, man has come to live in 

 an environment changed from that of other animals. He has 

 learned to build houses and to use fire. The living together of 

 men in communities has caused certain needs to develop. Many 

 things can be supplied in common, as water, milk, and fuel. Wastes 



