I assume 
has counterclockwise orientation when viewed from above.
By Stokes' theorem,
so we first compute the curl:
Then parameterize 
by
where the 
-component is obtained from
with 
and 
.
Take the normal vector to to be
Then the line integral is equal in value to the surface integral,
Answer:
ma ma ھگدفسخ टगाई samje ke hamreبھا मे
hoho gana ga
A pattern of growth<span> in which, in a new environment, the </span>population<span> density of an organism increases slowly initially, in a positive acceleration phase; then increases rapidly, approaching an exponential </span>growth<span> rate</span>
