Socks, Cream cheese, and Sponges.
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:the vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.
Explanation:
B. The water is likely contaminated with high levels of pollution or waste
