You do not need to plan. that was a false statement
        
             
        
        
        
Because, it is the process by which they make or produce their food with the help of sunlight, water and carbon dioxide.
If photsynthesis is not there then there would be no production of food and ultimatley plants will die.
        
             
        
        
        
Answer: Shivering
      
Explanation:
Homeostasis is the body ability to maintain the internal conditions stable and constant with respect to the changes occurring in the external environment. Shivering is a response shown by the body with respect to external cold environment. It is a tendency of the body to maintain it's internal temperature constant. It is the way by which the body produces heat to survive in cold weather conditions. 
 
        
                    
             
        
        
        
a crystal has a regularly repeating arrangement of atoms