Which of the following conditions would lead to a small population size?
a. a low birth to death ratio
b. a high birth to death ratio
c. immigration
d. large number of resources

Option a. low birth to death ratio
a= more people die than are born.
b=more people are born than die which is not possible according to question.
c=lots of people from other places come which cant be the solution.
d=the area has lots of resources to support a population which does not fulfil the question statement
 

The answer is ax3. hope this

Van der waals forces are temporary electromagnetic forces established between uncharged atoms. some neutral molecules, when close together, can become temporarily “charged,” as electrons move around the atom. water is a polar molecule, the side of the molecule that the hydrogens bond to being more positive, and the opposite side bound to the lone pairs of electrons being more negative. this means that it participates in dipole-dipole interaction (non-polar exhibits dispersion forces), and it has the capacity for hydrogen bonding.