The answer is D. Lymphatic
Skin isn't included in the lymphatic system.
Answer:
<u>A chemical bond between the phosphate group of one nucleotide and the sugar of a neighboring nucleotide holds the backbone together. Chemical bonds (hydrogen bonds) between the bases that are across from one another hold the two strands of the double helix together.</u>
Explanation:
Oxygen enters the blood in the A. Bronchi.
Hair follicles is the hair coming out of the subcutaneous layer