The answer is resource
partitioning. Due to competition between the two species population,  the
two species evolved to utilize different resources. Therefore, this is rather than competitive exclusion that results to the out-competition
of one species, or competition that results in
a negative interaction between the species.
 
 
        
                    
             
        
        
        
The answer is; B
Rocks have naturally occurring and spontaneously radioactive atoms in them, such as carbon-14. These element isotopes decay into other types of atoms over millions of years. Therefore, by measuring the amount of these radiometric substances, and knowing the half-life of the isotopes, it is possible to postulate the age of a rock to within certain ranges of error. 
 
        
                    
             
        
        
        
In photosynthetic organisms, NADPH is produced by ferredoxin-NADP+ reductase in the last step of the electron chain of the light reactions of photosynthesis. It is used as reducing power for the biosynthetic reactions in the Calvin cycle to assimilate carbon dioxide.