Answer:
The stomach produces hydrochloric acid.It kills many harmful microorganisms that might have been swallowed along with the food.The enzymes work best in acidic conditions-at low pH
A. Phosphate
Thymine is just in DNA.
Uracil is the replacement for thymine in RNA, so it is only in RNA.
Deoxyribose is just in DNA, it is what the 'D' stands for, RNA has ribose.
Both RNA and DNA have a phosphate and five-carbon sugar backbone, so they both have phosphate in them.
Answer: they break down the food and minerals
Explanation: