Which makes bacterial infections difficult to defeat?
O
A. Bacteria reproduce quickly.
O
B. Bacteria live inside the body's cells.
O
C. Macrophages cannot kill bacteria.
O
D. Killer T cells cannot reproduce.

"d.) carbon dioxide and hydrogen sulfide"

the answer is sex-linked recessive.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.