Which of these statements best describes a difference between Layer A and Layer B? Layer B is solid but layer A is molten.
Layer A is solid but layer B is molten.
Layer A moves in cyclic pattern but Layer B is stationary.
Layer B moves in cyclic pattern but Layer A is stationary.

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen