Answer:
C. porous
hope it helps!!!
please mark as the brainliest if it is correct!
Answer:
Antigens are molecules capable of stimulating an immune response. Each antigen has distinct surface features, or epitopes, resulting in specific responses. Antibodies (immunoglobins) are Y-shaped proteins produced by B cells of the immune system in response to exposure to antigens.
Answer: H2 + Cl2 => 2 HCl
Explanation: Each individual atom is already balanced.
I would say penicillin, as it saved many lives in it's time and ours. Hope this helps!
