Answer:
It's C. Plants produce oxygen and nutrients via a process known as photosynthesis using water and carbon dioxide 
 
        
             
        
        
        
Answer:
The human genome contains around 20,687 protein-coding genes. Different genes or instructions are read at different times in different cells in response to the requirements of our bodies. Each cell contains two sets of genes, one from your mother and one from your father.
Explanation:
 
        
             
        
        
        
C is a combustion reaction 
        
             
        
        
        
Since people with HIV have weakened immune systems it would be:
C) People with HIV are unable to fight off these rare diseases.