tectonic plates in the earth's crust has moved almost every piece of land from its original spot. On average, tectonic plates moved land masses about 2.3 CM a year.
Answer:
a. antigen
Explanation:
The Immune system is composed of immune cells that defend the body against foreign substances such as bacteria or virus. Lymphocytes (B and T cells) are one of the main immune cells
Lymphocytes have the ability to recognize and bind to antigens, wich are substances foreign to the body ( i.e bacterial or virus elements) that evokes an immune response.
Answer:
True
(I am not 100% sure because the question is very short with no context, but I believe it to be true)
