In comparison they both show feeding relationship in an ecosystem.
In contrast, a food chain is a simple linear feeding relationship while a food web is a complex feeding relationship.
2) The arrows is to show the direction of the feeding relationship
        
             
        
        
        
<span>The Answer is B: They could use the Benedict's test; it would not have a positive reaction for sucrose but it would for the other three sugars.</span>
        
                    
             
        
        
        
Earths lithospere is solid and sits on top of the softer asthenosphere.