Animals use this type of physical act to reproduce another type of their species. Mostly to impress or make the type of gender to fall in love.
 
        
             
        
        
        
The type of energy => Biomass energy
        
                    
             
        
        
        
The answer would be water. 
        
             
        
        
        
Answer:
The nonpolar tails in the middle of the plasma membrane
Explanation:
 
        
             
        
        
        
Answer:
Explanation:
It is called a double circulatory system because blood passes through the heart twice per circuit. The right pump sends deoxygenated blood to the lungs where it becomes oxygenated and returns back to the heart. The left pump sends the newly oxygenated blood around the body.