The blood carries carbon dioxide away from the cells
Asbestos, tobacco smoke, and formaldehyde are a few common examples
You would find layers in a sedimentary rock, because it has different types of other rock combined in it.
Structurally, DNA and RNA are nearly identical. As mentioned earlier, however, there are three fundamental differences that account for the very different functions of the two molecules. RNA has a ribose sugar instead of a deoxyribose sugar like DNA. RNA nucleotides have a uracil base instead of thymine.
