If japanese workers are more productive than french workers, then trade between japan and france

a) can take place only if france has an absolute advantage in producing a good or service japanese buyers want.
b) cannot take place because japanese goods and services will be less expensive than french goods and services.
c) cannot take place until french workers become more productive.
d) will take place so long as each country has a comparative advantage in a good or service that buyers in the other country want.

When analyzing tree rings, what do scientists assume a thin ring indicates?

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?