<h3>16 protons</h3><h2> </h2>
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Answer:
Evolution
Explanation:
Evolution is the change in habits, hereditary and physical characteristics of a species over various generations in response to environmental conditions. Evolution lead to adaptation, the nature selection of the fittest and elimination of remaining.
Evolution may produce variety and diversity in response to mutation, genetic drift and other genetic variation. These changes may pass to offspring and may express them more in one group of population.
Evolution also explain the unity among organisms by explaining their shared characteristics. This refers to their common ancestors.
The answer will be haptens because haptens has the ability of combining to carriers that are large enough to produce antibodies. The large carriers are usually the proteins that binds to it after producing antibodies. The antibodies, ions and reagins does not comply in the question above for antibodies focus more in the immunization. The ions are the electrons that produce positive or negative electric charge and the reagins are the ones responsible in allergic reactions.