Answer:
Valvular stenosis , Valvular prolapse , Regurgitation, 
Explanation:
 
        
             
        
        
        
search it and you will get on internet 
 
        
             
        
        
        
The relationship between resistance and the area of the cross section of a wire is inversely proportional . When resistance is increased in a circuit , for example by adding more electrical components , the current decreases as a result.
        
             
        
        
        
Answer:
Geothermal energy.
Explanation:
Geothermal energy is called a renewable energy source because the water is replenished by rainfall, and the heat is continuously produced by the earth.