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How do scientists use ice to study ancient climates?
through glacial deposits and ice cores
through glacial deposits and ice ages
through ice cores and Earth’s ellipse
through Earth’s ellipse and ice ages
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Answer: through glacial deposits and ice cores.
Why: glacial deposits (moraines, till, striations) record past glacier extent and movement, and ice cores preserve layered ice with trapped air bubbles and stable‑isotope ratios that tell temperature and atmospheric composition over time. The other choices include “Earth’s ellipse” (not a method) or confuse a climate event (ice ages) with the techniques scientists use.
Why: glacial deposits (moraines, till, striations) record past glacier extent and movement, and ice cores preserve layered ice with trapped air bubbles and stable‑isotope ratios that tell temperature and atmospheric composition over time. The other choices include “Earth’s ellipse” (not a method) or confuse a climate event (ice ages) with the techniques scientists use.
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