Answer:
Solar power take less energy compare to other and its charge by sun According to me solar energy is best way to save energy in future
 
        
             
        
        
        
Answer:
heat is the movement from areas of <u>high </u>temperature to areas of <u>low </u>temperature
 
        
             
        
        
        
Answer:
Density of the object is 8759.494 grams/L
Explanation:
As we know density of an object is mass of the object divided by its volume
Given 
Volume of the object is equal to the change in volume of water with in the cylinder when the object was immersed in water. 
Hence, volume of object is equal to 
 mL
 mL
Mass of the object is  grams
 grams
Density
  grams/L
 grams/L
Density of the object is 8759.494 grams/L
 
        
             
        
        
        
I personally think that it’s C. 
(i’m sorry if it’s wrong)