Answer:
Explanation:
yes true the gravitational pull does ap
ply to all objects of the universe 
Answer:true
 
        
                    
             
        
        
        
Radioisotopes tell scientists that the earth is 4.5 billion years old.
        
                    
             
        
        
        
Answer:
As the wave moves to and fro so the total distance will be d=2x5=10 m
we have
time (t) = 5 s
hence velocity will be =2 m/s
 
        
             
        
        
        
Carbon cycle and fossil fuels, I believe.