Answer:
I would say Phosphate Groups.
Explanation:
Nucleotides are joined together by covalent bonds between the phosphate group of one nucleotide and the third carbon atom of the pentose sugar in the next nucleotide.
In the first segment that covers the top part of the ocean the whale sharks producers serve as the basis of the food chain. In the top layer of the ocean enough sunlight hits the water which makes it a good place for planktons to grow. These planktons are then eaten by the whale sharks.
<span>DNA:
1. Found in nucleus
2. Sugar is deoxyribose
3. Bases are A,T,C,G</span>