270 FIRST YEAR SCIENCE 



Much more money has been lost in the United States 

 through the floods and fires caused by bad forestry than 

 has been gained by the people who cut the trees. 



Because of the wide range of climate and the variety of 

 physical conditions, there are a great many different kinds 

 of plants and animals in the United States, but the wild 

 animals have been steadily killed off as man has needed 

 their haunts for his farms and dwellings. 



QUESTIONS 



What do the rock layers show in regard to the history of life? 



Give several reasons why the same kind of plants and animals are 

 not found all over the earth. 



What animals do you know that are peculiarly adapted to the con- 

 ditions under which they live? 



If you could take a trip in a submarine capable of traveling over 

 and through the sea, what kind of animals would you expect to 

 find ? Under what different conditions would these animals be living ? 



How are land animals prepared to meet the conditions about 

 them? 



Describe how the distribution of animals has been influenced by 

 geographical conditions. 



How are animals affected by climate? 



What influence have oceanic islands had on life? 



How has man in many places changed the life of the land? 



Why is the proper care of forests so important to the well being of 

 man? 



To what plants and animals is the United States the " home land "? 



