Respuesta :
Index fossils (also known as guide
fossils, indicator fossils or zone
fossils) are fossils used to define
and identify geologic periods (or
faunal stages).
fossils, indicator fossils or zone
fossils) are fossils used to define
and identify geologic periods (or
faunal stages).
Answer:
The answer is HIR provides immunity against antigens and pathogens in body fluids, while CMIR provides immunity against the body’s own cells that have either become cancerous or infected
Explanation:
In humoral immunity, the main components are antibodies, which are produced by B lymphocytes. Humoral immunity is the main defense mechanism against microorganisms and their toxins. While cellular immunity is carried out by T lymphocytes. Cellular immunity is the vital defense mechanism against viruses and bacteria, including cancer cells