If you mean a specific system then the reproductive system...but i haven't the slightest idea as to anything else to do with your question...
        
                    
             
        
        
        
Chromalevota 
Is your answer
        
             
        
        
        
Answer:
Option A
Explanation:
In this case, there are two varieties of horses: Domestic horses that are raised and bred by humans and Wild horses that lives in the wild. The issue of varieties in coat colour of domestic horses can be explained as what occured by selective breeding, also known as artificial selection which is a technique by which humans develop new offsprings with desirable and suitable characteristics. These breeders select two parents that possess beneficial phenotypic traits to mate, producing offsprings with those desired traits such as strength and also for coat colour as stated.
 
        
             
        
        
        
The student is likely engaging or forming a hypothesis in which a hypothesis is a scientific method of having to formulate an intelligent or educated guess that may be an answer as to how a problem has occurred in which the student thinks that the racoon may live longer if it only eats vegetables.
        
             
        
        
        
Answer:
Spark up Spanish conversations, speak more Spanish, and sound more like a native Spanish speaker with these conversation starters and examples.
Explanation: