I'm so sorry i cant answer to the question
Answer:
<em>Experiment</em>
Explanation:
They test hypothesis by conducting experiments. The purpose of an experiment is to determine whether the observations of the real world agree or conflict with the predictions derived from a hypothesis. If they agree, confidence in the hypothesis increases; otherwise, it decreases.
Tectonically stable means that this part of the continent has not moved for billions of years. The rock formation is important understanding the history of Earth since its unmoved and untouched state can provide ideas about how the Earth looked like as seen on the layers of the rock formation.
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