Answer:
Lichens are often the first organism to colonize a new surface such as bare rock. 
Many organisms require soil before they can colonize an area. Lichens that colonize bare rock secrete acids that break down the rock and start the soil-production process. Also, as lichens die, they provide some organic matter that also contributes to soil.
* Hopefully this helps:) Mark me the brainliest:)!!
 
        
                    
             
        
        
        
High energy electrons are highly reactive (Their energy can be used to make NADPH & ATP.)
        
                    
             
        
        
        
Answer: I think it’s D. Pls don’t bash me if it’s wrong
        
                    
             
        
        
        
ATP consists of three phosphates, a base (adenine) and a sugar (ribose).
        
             
        
        
        
 Answer: Spermatogenesis begins at birth and continues throughout a man's life.
The process in which
haploid spermatozoa develop from germ cells in the seminiferous tubules of the
testis is known as Spermatogenesis. Thus, the process of spermatogenesis start
with mitotic division of the stem cells that is located close to the basement
membrane of the tubules. However, a mature male gametes known as sperm but it
is commonly known as spermatozoa.