Describe how a single pair of seed eating birds could have arrived on an island and evolved into insect eating birds.

These birds could have evolved into insect eating birds by breeding with different kinds of birds, getting used to eating insects after not having bird seed or they have been eating insects just not as much as they should.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides