Answer: Helium has two protons, while hydrogen only has one.
Here’s a brief rundown on why the rest wouldn’t be right: 
- Hydrogen has one neutron
Hydrogen actually has no neutron, a hydrogen atom contains one proton, one electron, and no neutrons. 
- Helium has one neutron 
Most helium atoms have two neutrons in it. 
-Hydrogen has 2 protons, while Helium only has one
As stated, Hydrogen has one proton. Helium actually has 2 protons, electrons, and neutrons. 
Hope this helps!
        
             
        
        
        
Answer Food webs consist of many interconnected food chains and are more realistic representation of consumption relationships in ecosystems.
Explanation:
 
        
             
        
        
        
B
because the compound light has the light bulb in it
        
                    
             
        
        
        
Answer:
The function of B cells is to make antibodies against antigens
Explanation:
 
        
                    
             
        
        
        
Answer:
From Hydrogen ion.
H+
Explanation:
It's is from hydrogen ion because majoroty of the electrons transport processes take place in the thylakoids membranes in a bid to produced ATP, Hydrogen ion is allow to move through thylakoid space and then backflow through the proteins embedded in the thylakoids membrane called ATP synthase, which produce ATP from ADP in the mitochondrial matrix and chloroplast stroma.