Answer:The physiological response is to maintain a neutral PH.
Explanation:
 
        
             
        
        
        
Answer:
I think the answer is the first option, more reliable and harder to use.
Explanation:
I think this because technology is expensive and the most reliable thing we have right now so the other options don't make sense.
 
        
                    
             
        
        
        
The one when u die and the foodm stoore
        
             
        
        
        
Answer:
1. Before: carbon dioxide After: Oxygen
2. Oxygen
3. Chloroplast
 
        
             
        
        
        
I don't think the answer is A as that seems a bit drastic, I think it's C.