Answer:
ummmmmm thank u for these 15 pts
Nucleotides are the building blocks ofnucleic acids; they are composed of three subunit molecules: anitrogenous base, a five-carbon sugar (ribose or deoxyribose), and at least one phosphate group.
Wind water and ice roads and shape the land. Volcanic activity and earthquakes alter the landscape in a dramatic and often violent manner. And on a much longer time scale, the movement of earths plates slowly reconfigures oceans and continents. Each one of these processes plays a role in the Arctic and Antarctica.
