Immunizations against infectious diseases are one of the most successful medical advancements in the history of public health. a vaccine, containing weakened or dead forms of the antigen, is administered orally, intranasally, subcutaneously, or intramuscularly. the antigens are not virulent enough to cause the disease, but they provoke the adaptive immune response in the body. a vaccine is an example of which type of adaptive immunity?

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy