Answer A. If the tectonic plates continually move then they change earth’s crust constantly.
3 (I think, sorry if it’s wrong)
Answer: No
Explanation: if a nucleic acid contains uracil then it is not DNA it's an RNA. Uracil is the basic nitrogenous base of RNA. DNA does not have Uracil in its structure. It contains thiamine instead of Uracil. So the answer is NO.
Answer:
The types of epithelia are classified by the shapes of cells present and the number of layers of cells