One is pulmonary one is cellular
        
             
        
        
        
In plants the reproductive structure that produces pollen and seeds is the xylem is the answer
        
             
        
        
        
Answer:
Fires, volcanoes, and weathering
 
        
             
        
        
        
The neurons conduct impulses over relatively long distance in the body. This is facilitated by their long cytoplasmic extensions