Answer:
answer is 2 for both cuz they both have the 2 subscript next to hydrogen
 
        
                    
             
        
        
        
There are 5 different levels of cellular organization.
Cells, tissues, organs, organ systems and whole organisms. Cells hold genetic material and absorb outside energy. 
Tissues make up the bones, nerves and connective fibers of the body. Organs work to perform specific bodily tasks, such as filtering blood. Organ systems are groups of organs that perform a specific kind of function together, such as digesting food. 
Together, these smaller systems make up an entire living organism which can grow and then go onto reproduce.
Explanation:
 
        
             
        
        
        
Answer:
Forestation.
Explanation:
When life is created on land where there originally was no life, wind brings over pioneer species, such as grasses. Over time, life takes advantage and grows bushes, trees, and so on.