Answer:
Una capacidad reducida para distinguir entre ciertos colores.
 
        
             
        
        
        
During the growth of crystals astronauts study and perform this action while in the space stations. The astronauts freeze a certain liquid that turns into a solid. The solid form forms a certain pattern that is “special”. The materials that group together form the actual crystal.
        
             
        
        
        
Answer:
Hormones
Explanation:
Hormones is the term used for chemical secretion of endocrine glands responsible for changes taking in the body.