Answer:
Plan b is a backup plan if your original plan doesn't work:)
Explanation:
Answer:
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I think the answer is number 2 Animals respite
Ocean, because the moon's gravity has a direct effect in the tides
A. <span>Exposure to an antigen
Exposure to viruses and antigens led to the foundation of modern vaccination. Vaccination introduces an antigenic material that helps the ability of the immune system to adapt a specific pathogen, therefore leading to a long-term immunity.</span>
