Why do doctors check for swollen lymph nodes? A. Bacteria and viruses mostly attack the lymph nodes.
B. Memory cells are stored in the lymph nodes.
C. It is impossible to immunize the lymph nodes.
D. Lymph nodes are the site of white blood cell production.

A

Explanation:

Because Bacteria and viruses mostly attack the lymph nodes so doctors check it

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

the answer is b. glad to .