Women of average risk for breast cancer should start going at 50 and follow up every 2 years .
DNA<span> is a long polymer with deoxyribose and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. </span>RNA<span> is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.</span><span />
Answer:
Dark-green is the only real subgroup of vegetables from these choices.
The correct answer is:
C. Four food groups
