Answer:
Overproduction, Variation,  Selection, and <em>Competition</em>
 
        
             
        
        
        
A 15-month-old child, equivalent to a child of 1 year and 3 months of age, should have began weaning from bottle feeding from 6 months of age. Tooth decay or dental caries are commonly associated with prolonged bottle feeding as the sugars and other substances in milk; when drank from a teat from a bottle; prolongs the exposure of teeth to the milk, leading to overgrowth of bacteria causing dental caries. 
        
             
        
        
        
I think it would be c. 1.5 because it is half the size. Also good luck for your quiz
        
             
        
        
        
        
Unlike freshwater fish, saltwater fish <span>often contain a lower concentration of salt than the water they live in.
so your answer is </span><span>A. often contain a lower concentration of salt than the water they live in.
hope that helps!!!!!</span>