B. because the rock is formed and it goes younger as it grows the rock is still old on the inner layers but it adds new layers as it goes
Answer is B same as the weight of that
Answer:
. A DNA molecule in a human chromosome can be up to 250 million nucleotide-pairs long; in contrast, most RNAs are no more than a few thousand nucleotides long, and many are considerably shorter.
(True) because i remember this question very well.
