Answer:
D, because he discovered electrons
Explanation:
 
        
                    
             
        
        
        
Answer:
 there is some difference
Explanation:
hydrogen ion -- 
symbol-H
Charge- 1+ or 1-
it is atom
hydroxide ion --
symbol- OH
charge-. -1
contains.- one oxygen atom and one hydrogen atom. 
 they are bonded.
it is a molecule
 
        
             
        
        
        
Answer:
Gelada baboons plays a significant role.
Explanation:
The role of gelada baboons in their ecosystem is very important because they aerate the soil for plants which is necessary for good plant growth. These gelada baboons also helps in controlling the population of predator in their ecosystem which is very essential for the stability and equilibrium of the ecosystem so gelada baboons has a good effect on both plants and animals in their ecosystem.