Multicellular organisms e.g. man  meet their needs through use of specialized  systems that they have in their bodies. Examples of such include:
1. cardiovascular system composed of heart, veins and  arteries which facilitate transport of nutrients to all parts of the body .
2. Skeletal system composed of bones, joints, ligaments and cartilage whose function is support and protection of the body. 
3. Digestive system composed of mouth, esophagus, stomach , small and large intestines whose function is breakdown of food and absorption of nutrients.
 
        
             
        
        
        
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Answer: All known historical and modern economies are examples of mixed economies, though some economists have critiqued the economic effects of various forms of mixed economy.
Explanation:
 
        
                    
             
        
        
        
Ummmmm I don’t know can you explain what you mean
        
                    
             
        
        
        
<u>Answer:</u>
The astronomers predicted fireworks from the rare stellar encounter in the year 2018. Stellar collision can be defined as when two stars which are in the same group of the stars due to the radiations emitted by the gravity or may be because of some other reason. 
The importance of this encounter to the astronomers was that this can describe the huge population of millisecond pulsars and can also be used to develop the exotica of the stars.