Answer:
The awnser is atoms
Explanation:
Atoms are the building blocks of everything.
 
        
             
        
        
        
Answer: for HCO it dissolves in water
for CH2OH IT dissolves in water 
Explanation:
i just took the test 
 
        
                    
             
        
        
        
Hey! I'm pretty sure this is chemistry instead of biology haha
But anyways, a typical carbon atom can form up to 4 covalent bonds!
 
        
                    
             
        
        
        
Answer:
True
Guard cells close openings in the leaves slowing down water loss.