<span> It is a hydraulic </span>system<span> used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. The </span>system<span> is composed of canals connecting numerous tube feet.</span>
        
             
        
        
        
Answer:
look below
Explanation:
My species is one of many
In order to solve the problem try it this way
a phylum is a level of classification 
taxonomy is the scientific study of naming
All animals have a kingdom 
Genus is a taxonomic rank 
 
        
             
        
        
        
Answer:
a
Explanation:
a just trust me on this one
 
        
                    
             
        
        
        
Answer:
Changes in the environment affect the food sources available for birds. For example, if a flood was to occur, there would be an abundance of fish to birds to eat. So birds with bigger beaks will be able to eat fish, to live and reproduce offspring with bigger beaks. While birds with smaller beaks will not be able to catch fish to eat, therefore decreasing the population of birds with smaller beaks.