282 LIVING THINGS IN THEIR ENVIRONMENT 



be made of coarse cheesecloth or mosiquito netting. With 

 this equipment you can capture all sorts of animals for 



your home or school 

 aquarium. 



Zones of Life. As 

 we observe life in a 

 stream or pond we 

 soon see what living 

 things frequent one 

 of several zones; 

 they may be in or 

 along the bank, in 

 the water, on the 

 water, or in the air 

 just over it, in or 



It would be an interesting project to make a net under stones in the 

 like the one shown above. Why not try it ? i , i T-I i 



brook or pond. Each 



zone has its own collection of inhabitants. For example, 

 the young stages or larvae of some insects, worms, 

 and little crustaceans, to be known by their jointed 

 bodies divided into two parts and jointed legs, will be 

 found in the mud or crawling on the bottom or under 

 stones. Fish, crustaceans, and insect larvae are in the 

 water. Insects will be in the air or on the surface film 

 of the water, while larger animals like turtles and frogs, 

 although they may be in any of these zones, will be 

 likely to be found sunning themselves on the bank. 

 Water plants are much more restricted to their own 

 particular zone. The many forms of algae, plants with 

 thread-like bodies or with finely divided leaves living in 

 the water, pond lilies with floating leaves at the surface, 

 and many water weeds frequent the banks, offering 

 shelter to insects and other small animals. In every 

 case, if you look, you can find many adaptations for 

 aquatic life. The stems are thin and long, for the plant 



