Answer:
Functions of phosphorus in the body, 
i) Formation of bones and teeth. It's a component necessary for forming strong bones and teeth in the body. 
ii) It's important in helping to make protein in the body for growth. Since many proteins in the body are phosphorylated for regulating their functions. 
iii) Activation of enzymes. This done through phosphorylation. 
iv) Gene transcription. It provides structural importance to the gene and protein binding is by the presence of phosphorus. 
Deficiency of phosphorus in the body;
i) Weak and fragile bones. 
ii) Bone pain. 
iii) Fragile teeth. 
iv) Stiff joints. 
 
        
             
        
        
        
Answer:
A
Explanation:
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Light energy can be converted to heat energy. Electrical energy can be converted to mechanical energy, light energy, heat energy, etc. Chemical energy can be converted to electrical energy.