Charles darwin studied finches on the galapagos islands. while the finches on all the islands came from the same ancestors, the distance between the islands was too great to allow finches from different islands to interbreed. over time, the size of the finches on the different islands remained the same, but the shape and size of their beaks changed, as shown here. this adaptation the finches find food on their particular island. the change in the size and shape of the finches’ beaks was most likely caused by a) geographic isolation b) a change in climate. c) endangerment of the species. d) a decrease in the mutation rate.

hello there,

guys i’m confused.

which rock will weather faster?

answer: b rock

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.