The answer is an overhunting.
<span>The bottleneck event means drastic reduction of the population size because of environment changes. The consequence of this is the reduction of genetic variation. The bison population is a good example of the population bottleneck. The bison population drastically reduced its size due to overhunting which culminated at the end of the 19th century, when bisons almost extinct. </span>
        
             
        
        
        
Answer:
electron 
Explanation:
elections circle the nucleus 
 
        
             
        
        
        
That is what we call the muscular system. This system allows us to move, circulates blood through the body and their is 3 types of muscle. Skeletal muscle is voluntary and are mostly attached to two bones. Smooth muscle is found inside organs such as stomach and blood vessels. And Cardiac muscle is ONLY found in the heart .
        
             
        
        
        
Answer:
they change over time based on newly gathered information, such as molecular information about a species. Organisms are now classified in a more specific manner which has ended up introducing so many new species of organisms.
Explanation: