4. Is the Apollo 11 mission 
        
             
        
        
        
I think it'd be B.. I might be wrong tho..
        
                    
             
        
        
        
Answer:
it increases oxygen levels and decrease carbon dioxide levels
 
        
             
        
        
        
50/50 it really depends on whos jeans ae stronger ! 
        
             
        
        
        
Answer; 
A bottleneck effect
Explanation; 
When only a few individuals survive unfavorable times, thereby losing the majority of genotypes in the next generation, it is called a bottleneck effect. 
It occurs when there is a disaster of some sort that reduces a population to a small handful, which rarely represents the actual genetic makeup of the initial population.