Answer:
well theory is ranked second highest in certainty in scientific nomenclature. theory dictates it is more certain of a principle than a hypothesis yet not concrete enough to be a law. examples are the theory of evolution versus the law of gravity 
 
        
             
        
        
        
Well, the food is in the environment. I would like to compare it with how bacteriae feed (however my biology is quite rusty), that is, they engulf their food and they "digest" -- not the proper term, since there are no organs to do real digestion -- it.
        
             
        
        
        
The answer is : exponentially
        
             
        
        
        
Carbon dioxide is the compound in photosynthesis, I'm pretty sure
        
                    
             
        
        
        
Answer:
The S phase
Explanation:
cell replicates the chromosomes by taking one chromatid and effectively doubling it