SURVEY QUESTIONS 



If the earth was once all molten 



rock, how can you account for the 



soil and water now formed on its 



surface ? 

 Did you ever find a fossil ? How do 



you think it was made ? 

 What are some evidences of the 



force of water ? 

 How are the active forces of nature 



of vital importance to a farmer? 

 Do you know what kinds of soil hold 



water ? What kinds are porous ? 



What kinds make the best soil for 



growing crops ? 

 Wliy are fertilizers added to soil? 



Photo by E. S. Shipp. Courtesy U. S. Forest Service 



