Answer:Atmosphere
Explanation:
Moon is smaller in size than earth and hence, has very low force of gravity. Moon does not have atmosphere as its weaker force of gravity can not hold the atmosphere. Any present atmosphere on moon would have stripped away by strong solar wind. The weaker magnetic field of moon is one more reason for absence of atmosphere.
 
        
                    
             
        
        
        
Answer:
The study of anything basically. It is learing new things by observation, experiments, facts, principle, and hypothesis. 
 
        
                    
             
        
        
        
Respiration and Photosynthesis
 
        
             
        
        
        
Answer:
Yes it can, the one parents genes can be stronger than the other 
 
        
             
        
        
        
I really dont know the answer but I need something so Iam typing this so yea lol