QUESTIONS 
31 
Among the natural enemies of these insects that do much 
toward reducing their number are the birds. Some of 
the greatest destroyers of grasshoppers are the quail, blue¬ 
bird, sparrow hawk, butcher bird, crow, red-winged black¬ 
bird, and kingbird. The crows, because of their large size 
and great numbers, probably kill the most grasshoppers. 
Other members of the order Orthoptera, that are harmful, 
are the cockroaches, the nuisances of the pantry, and the 
crickets that eat the roots of plants. There are also tree 
crickets which frequently lay their eggs in raspberry cane 
and this injury kills the cane above the place where the 
egg is laid. 
17. What Has an Animal like the Grasshopper Accom¬ 
plished by Living? — (1) It has used plants as food to build 
a complex body. (2) It has produced more grasshoppers. 
(3) It has used some stored-up food which might have 
been useful to cattle or sheep. (4) It has set free waste 
carbon dioxide which can be used by green plants to assist 
them in making food. (5) When it dies and decomposes, 
its chemical substances are returned to the soil and air to 
be used again by other living things. 
QUESTIONS 
What are the most important things that the grasshopper must do to 
live? 
How is the grasshopper protected? How does the grasshopper 
breathe? How get its food? 
How does the grasshopper begin life ? 
Define metamorphosis. How many kinds of metamorphosis are 
there? Which kind does the grasshopper show? 
Is the grasshopper a friend or an enemy to man ? Why ? 
