There are more than simply 4 biological compounds in the human body. I suppose to categorise, the question is hinting towards the molecules like Carbohydrates ( Poly and mono saccharides ) Proteins ( Polypeptides Made of amino acids) and Fats. There is also water, but I'm hesitant to class that as a biological compound, as it's not organic. 
        
             
        
        
        
Answer:
Plant families that produce copious amounts of latex include:
Euphorb family (Euphorbiaceae),
milkweed family (Asclepiadaceae),
mulberry family (Moraceae),
dogbane family (Apocynaceae), and.
chicory tribe (Lactuceae) of the sunflower family (Asteraceae).
Explanation:
 
        
             
        
        
        
The answer is Bank autologous blood. It is simply the giving blood. For instance, patients planned for non-crisis surgery might be qualified to give blood for themselves that will be put away until the surgical technique. Amid the time of "capacity", the body is making more blood.
        
             
        
        
        
Natural gas
explanation:
solar power, coal, and petroleum are used to power things (i.e. produce electricity)