I am mostly sure the answer is B. Good luck, and sorry if it's wrong! :(
The ice stays on top because it is sold which means it is less dense than liquid (water)
<em>During dna replication, the enzyme dna polymerase adds new nucleotides to the </em><em>3</em><em>'</em><em> end of the sugar in the growing strand</em>
Brain size has increased nearly 3x in 4 million years.
