Answer:
adaptation is what's happening, and the moths changed color to adapt to the new environment.
because of the smoke, the light colored moths were easily spotted and eaten. but they changed color over time to account for that, turning black to make them harder to spot and eat.
 
        
             
        
        
        
The hypothesis that all modern humans descended from an African lineage is supported by the mitochondrial DNA evidence. The Eve hypothesis is the hypothesis that is based on the study of mirtochodrial DNA; that modern humans have a common female ancestor who lived in Africa around 200,000 years ago. It is also called African Eve hypothesis. 
        
             
        
        
        
Four daughter cells that are haploid 
1         2
4         not sure
yes     no
yes     yes 
        
             
        
        
        
Groundwater is the water found underground in the cracks and spaces in soil, sand, & rock.