4 o6 GENERAL SCIENCE 



should know what kind of an environment to select. In 

 choosing a locality for home-making or a place in which to 

 live, the social or human environment should perhaps 

 receive first consideration, because the social environment 

 is usually the hardest to change. The next to receive 

 consideration is the nearness to swamps or standing water 

 where mosquitoes can breed; then the following: good 

 drainage about the home in order to carry off surface 

 water quickly, proper elevation with reference to the im- 

 mediate surroundings, kind of water and the quantity 

 available for household purposes, nearness to factories 

 or other undesirable institutions that hinder the comforts 

 of a happy home. 



QUESTIONS AND EXERCISES 



1. How does man differ from other animals? 



2. What are the greatest enemies of man? What methods are 

 used to overcome them? 



3. What are the most important things to consider in selecting a 

 location for a home? 



