To reproduce (asexually). Most unicellular organisms only live for mere hours. The best bet for the species to survive and thrive as a whole is for them to reproduce, or replicate. 
        
             
        
        
        
Answer:light dependent depends upon light to be successful also Hydrogen and oxygen are produced while dark reaction is against all also glucose is produced
 
        
             
        
        
        
The answer is b. For example, nuclear fusion in the sun (an exergonic process) releases energy as light and heat, and powers the initial steps of photosynthesis (an endergonic process). 
        
             
        
        
        
Answer: C. is less likely to be eaten by a predator.
Explanation:
The adult seven-spotted cockroach is the prey of various other insects including beetles so mimicking the pattern of a beetle would send a message that it is a beetle and because the chemical irritant that the beetle has makes it get avoided by others, the cockroach gets avoided by other insects too who don't want to be sprayed. 
Of course this does not always work but it works for the most part and ensures the cockroach's survival.