Answer:proton
For our purposes at this point in the text, we can define an acid. as a substance with at least one hydrogen atom that can dissociate to form an anion and an H + ion (a proton) in aqueous solution, thereby forming an acidic solution.
Explanation: hope it helps!
 
        
             
        
        
        
Cyanobacteria which is a type of algae. It conducts photosynthesis and without it there may not have been life today because they didn't need oxygen to survive and in order to have oxygen there had to have been some form of life...
        
                    
             
        
        
        
Answer:
Moistening food and helping to create a food bolus so food can be swallowed easily
 
        
             
        
        
        
The discover things from the past