Answer:
hii what does your question mean 
 
        
             
        
        
        
Coal was the driving force behind 1800s culture
        
                    
             
        
        
        
Answer:
Hope this helps :)
Rhizobia are a "group of soil bacteria that infect the roots of legumes to form root nodules". Rhizobia are found in the soil and after infection, produce nodules in the legume where they fix nitrogen gas (N2) from the atmosphere turning it into a more readily useful form of nitrogen.
Explanation:
 
        
                    
             
        
        
        
Predation 
It can be explained in that way or also called Predatory/prey relationships. 
Parasitism is when one is benefited and the other harmed (ie leech and human)
Commensalism is when one is benefited and the other not affected (Tree frog and rainforest tree) 
Mutualism is when both are benefited (Bee eats honey and Flower is pollinated).