Answer:
Rate of change of volume of the pile  
Explanation:
Given - 
Rate of increase of the base of the pile  inches per minute
 inches per minute
Height of the pile  the radius of the base
 the radius of the base
Let "h"  be the height of the pile and "r" be the radius of the base. 
Then 
Radius "r"  inches
 inches
Rate of change of radius i.e
 
Volume of conical pile 

Change in volume of conical pile 

Substituting the value of rate of change of radius, we get - 

Rate of change of volume of the pile  
 
        
             
        
        
        
The promise of jobs and prosperity, among other factors, pulls people to cities. Half of the global population already lives in cities, and by 2050 two-thirds of the world's people are expected to live in urban areas. But in cities two of the most pressing problems facing the world today also come together: poverty and environmental degradation.
 
        
             
        
        
        
CCAGAT , or B.
The reason why is because A only pairs with T, and G only pairs with C. So, if you have a strand with GGTCTA, the only possible pairing for that to replicate is CCAGAT.
        
                    
             
        
        
        
Well, dissolved carbon is basically carbon, and carbon and other atmospheric gases dissolve in water. So that would most likely lead to the answer being oceans and lakes.