Active transport move molecules from low concentrations to high concentrations.
        
             
        
        
        
Answer:
 1. Elastic collision
2. Inelastic collision    
Explanation:
 
Elastic collision: collision is said to be elastic if total kinetic energy is not conserved and if there is a rebound after collision 
the collision is described by the equation bellow

Inelastic collision: this type of collision occurs when the total kinetic energy of a body is conserved or when the bodies sticks together and move with a common velocity
the collision is described by the equation bellow

 
        
             
        
        
        
<span> Second-level consumer </span>