( need asap :) )What is the key to the linking of nucleotides that form the sugar-phosphate backbone of DNA? A. a weak hydrogen bond
B. a covalent bond
C. a polar bond
D. a phosphoester bond

1. watermelon, papaya, oranges, bananas, and lemons are included in this food group. vitamin c 2. you need 6 or more servings of this food group each day vitamins d and a 3. found in fruit and keeps blood vessels healthy calcium 4. vitamins found in milk bread and grain 5. a mineral that strengthens bones fruit

What advantages does a pedigree have over a written passage?

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?