Respuesta :

Answer:

Because scientists don't really know the full truth about the past of Earth and how it formed. We only know what scientist find evidence of.

Explanation:

(Not sure if this is exactly what you are looking for haha)

          Science is not 100% certain because findings are based on probabilities. New evidence can invalidate predictions and even modify well-accepted understandings. Science cannot answer questions with certainty because science is always evolving and growing.

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