Why Do Twins Look Identical

Many people have twin friends, and upon first meeting them, one often marvels at how similar they look. Why do twins resemble each other so closely? What leads to the formation of twins? Sperm





Is a vaccine injecting a virus

Does vaccination mean injecting the virus into yourself? After all, it doesn’t necessarily cause illness. Even if someone becomes infected and later recovers, wouldn’t they also develop antibodies?


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