Since it has 4 protons, it must have an atomic number of 4. (That makes it beryllium.)
Since it has a 4 protons and 5 neutrons, it has a mass number of 9.
        
             
        
        
        
<h2>its true</h2><h2>the ecological system of organization is a gigantic scale of all sorts of sh*tt</h2>
        
             
        
        
        
Collagen is single most abundant body
        
             
        
        
        
Answer:False
Explanation:Fossil fuels are the energy-rich substances