Answer:
 
Explanation:
Angular momentum, L = m v r
areal velocity = 
according to kepler's 2nd law 

since, we know that

areal velocity= 
now substituting value of v in areal velocity we get

hence from above equation of rate of change of area swept i.e. areal velocity is proportional to   
 
        
             
        
        
        
Answer:
The founder effect, inbreeding, and genetic drift
Explanation:
- <u>The dunkers are those who are a religious group of people who have moved from the Germany to the state of Pennsylvania in the mid-1700 s. They don't marry outside their community.  </u>
- And as of now, they are considered to be genetically strong from the rest of the populations as they signify the founder effect and traces of interbreeding with genetic drift.
- <u>This occurs to a very small number of people in the larger populations. Thus making them unique and resistant to the others.</u>
 
        
             
        
        
        
They are formed when magma from within the earths upper Mantle works it’s way to the surface