Answer:
Because the vaccine is an antigen from living, weakened or killed microorganisms that activate the immune system and the body produces protective antibodies.
Answer:
Household biology is the study of household animals,insects,etc.,including how to prevent damage to our own body and to our belongings
Answer:
D) RNA or DNA
Explanation:
Most viruses either have RNA or DNA as their genetic material.
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This <span>statement should be classified as</span> a theory
