<span>The
number of species in a whole represents the whole of the species. They are
related with each other. For example, you cannot call a society without the
people living in that area because the people represents the society. Another
example, you cannot call mathematics as a subject without the formulas and
numbers present in it.</span>
Not smooth would be correct :)
Voldemort thinks that Snape is the master of the elder wand, so the only way for Voldemort to be the master of the elder wand is to kill Snape. He sends Nagaini to kill Snape because he wants the powerful wand all to himself
