I believe an Atom is a very powerful source, the basic unit of a chemical element. An atom is a source of nuclear energy. 
But a molecule on the other hand isn't so different.
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
I hope that helps, have a fantastic day!
        
                    
             
        
        
        
Different layers represent clouds made of gases that condense at different temperatures.
 
        
             
        
        
        
Answer:External forces are forces caused by external agent outside of the system. Internal forces are forces exchanged by the objects in the system.
Explanation:or our purposes, we will simply say that external forces include the applied force, normal force, tension force, friction force, and air resistance force. And for our purposes, the internal forces include the gravity forces, magnetic force, electrical force, and spring force.HOPE THIS HELPS!!! ^w^
 
        
             
        
        
        
Answer:
Swim, jogging, weight lifting are some activities to do. This will help the overall health of the heart and mind. 
Explanation: