ADAPTABILITY OF LIFE 247 



much more restricted, since it is seldom able to adapt 

 itself to widely differing conditions. The surrounding 

 region, the elevation, the temperature, the amount of 

 moisture, the soil, the kinds of winds and their force, all 

 have a marked effect upon the fauna (animals) and flora 

 (plants) of a country. 



The species that thrive in a region must have adapted 

 themselves to the existing conditions, yet other animals 

 and plants may be as well adapted for certain regions as 



A CALIFORNIA RABBIT DRIVE. 



In some communities rabbits become such a pest that the inhabitants turn 

 out in a body and drive them into enclosures. 



those now inhabiting them. Striking examples of this 

 are the English sparrow and the gipsy moth, which have 

 spread with such tremendous rapidity since their introduc- 

 tion into this country. The rabbit in Australia and 

 southern California is another striking example. The 

 adaptability of plants to a new region is also illustrated by 



