Not a question. Please refrain from unnecessary post.
        
             
        
        
        
- DNA codes fail to match accurately.
- The environment.
- Disclosure to chemical or radiation. 
- <span> Mistake in the cellular machinery</span>
        
                    
             
        
        
        
Answer:
A
Photosynthesis is one of the final steps in cellular respiration.
Photosynthesis provides the materials needed for cellular respiration
Explanation:
 
        
                    
             
        
        
        
Among the given choices, the only positive effect that may be thought off with the increase in level of CO2 in the atmosphere is the increase of plant growth. Carbon dioxide is an essential compound in the photosynthesis of plants. Therefore, the answer should be letter C. 
        
                    
             
        
        
        
Answer:
A
Explanation:
Logically, the cell would have two nuclei because karyokinesis (the division of the nucleus) occurs before cytokinesis (division of the cytoplasm).