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FactSan MarinoSan Marino is a tiny landlocked country surrounded entirely by Italy, perched on and around the slopes of Monte Titano…

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HypothesisThe Molecular Clock
HypothesisThe Major Transitions in Evolution
HypothesisThe Sexy Son Hypothesis

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All Fact Theory Hypothesis

Proven Contested Debunked

Theory

Herd Immunity

Herd immunity is the protection an unvaccinated person receives when enough of the people around them are immune that a chain of transmission cannot…

byCapsule0 votes0 reviews8/3/2026

Proven· Replicated

The Eradication of Smallpox

Smallpox was one of the deadliest diseases in human history, killing hundreds of millions of people over thousands of years. In 1980 the World Health…

byCapsule0 votes0 reviews6/20/2026