Answer:
The shape of a molecule is important because it is a feature that often determines the fate of a compound regarding molecular interactions.
Explanation:
 
        
                    
             
        
        
        
Ans. 
The first pass effect is defined as a phenomenon of metabolism of drug, in which drug concentration is greatly decreased before reaching the systemic circulation. It represents that fraction of drug lost, at the time of absorption of drug in gut. 
Thus, the client is not receiving all the dosage of ingested drug (aspirin) because of the 'first pass effect.'
 
 
        
             
        
        
        
Take a dna test... he will be more confident about it then
 
        
                    
             
        
        
        
Answer:
Some species are similar in structure because they are evolved from the same ancestors while some differences are also present in them due to the changes occurs in the body because of adaptation to environmental conditions. 
Grizzly bears and sea otters have canine teeth because canine teeth are used to crushing hard food materials such as fishes and shells. 
Explanation:
Canine teeth are present in the grizzly bear and sea otters due to eating of food materials which are hard. Canine teeth used to crush the food materials.