One reason birth and fertility rates in more-developed countries tend to be lower is that

a.
pollution has drastically decreased fertility in these countries

b.
infant mortality is higher

c.
the cost of raising and educating children is much higher

d.
marriage is much less common

e.
all of these countries have restrictions on the number of children a couple can have

Yes that is correct answer in 6

This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.

Answer (d) may increase or decrease porosity through dissolution or deposition;

Europe needs to build a trump-like wall that will spread across europe making it impossible for migrants to cross they need to spread pig guts all over this wall so the muslims will never consider crossing into europe..you might be asking "can't they just fly over with planes? " well yes they can so we will install thaad missile protections system to shoot down any aircraft that violates europe's air fourth would be to start a fourth reich in germany.. last but not least.. make europe great again!