Answer: 
A friend is a person whom one knows and with whom one has a bond of mutual affection, typically exclusive of sexual or family relations.
 
        
             
        
        
        
I think it is called the anemone
        
                    
             
        
        
        
Answer:
Nucleus
the central and most important part of an object, movement, or group, forming the basis for its activity and growth.
Nucleolus
a small dense spherical structure in the nucleus of a cell during interphase.
 
        
                    
             
        
        
        
Difference threshold is a minimum alteration in sensory intensity that is noticeable to an observer and can be coded into neural messages. Different threshold is the lowest level of encouragement that is essential to sense that a modification has happened the difference in the intensity between two stimuli that is necessary to yield a just notable difference also known as JND. The just notable difference depends not only on the intensity of the new stimulus but also on the level of stimulation already present which is the more intense the existing stimulus the larger the change must be to be noticeable. 
        
             
        
        
        
Answer:
all you will need to understand the basic energy change results the 2nd law predicts. ... We can transform some of it (but not all) into useful work.
Explanation: