The distribution of some species over the Earth has been affected by
the electromagnetic spectrum of the sun
plate tectonics
the position of the north star
stability of fossils

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.