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Additional Practice · Q6

Q.Why does the author say Antarctica is the place to go to understand the planet's past, present and future? (Answer in 30–40 words.)

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Antarctica's pristine ice holds a half-million-year climate record, making it a unique archive to study Earth's environmental history and predict future changes driven by global warming.

The author positions Antarctica as a living laboratory for understanding Earth across time because the continent preserves an unbroken environmental record in its ice. Unlike other regions where human activity and natural processes have erased or obscured historical evidence, Antarctica remains relatively untouched, its ice cores trapping ancient atmospheres, dust, and gases in chronological layers.

The ice sheets function as a geological diary. Air bubbles frozen millennia ago reveal past atmospheric compositions, showing how carbon dioxide levels and temperatures have fluctuated over roughly half a million years. This backward glance into the past gives scientists baseline data about natural climate cycles before industrialization. …

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