Ice cores are valuable climatic archives because A. The ice contains geochemical

Question

Ice cores are valuable climatic archives because A. The ice contains geochemical proxies of atmospheric ozone of the past B. The ice contains geochemical proxies of temperature in the past C. The geographic distribution of coring sites ranges from both polar regions to the tropics (e.g. tropical high mountains) D. Both A and B E. Both B and C Ice cores are valuable climatic archives because A. The ice contains geochemical proxies of atmospheric ozone of the past B. The ice contains geochemical proxies of temperature in the past C. The geographic distribution of coring sites ranges from both polar regions to the tropics (e.g. tropical high mountains) D. Both A and B E. Both B and C A. The ice contains geochemical proxies of atmospheric ozone of the past B. The ice contains geochemical proxies of temperature in the past C. The geographic distribution of coring sites ranges from both polar regions to the tropics (e.g. tropical high mountains) D. Both A and B E. Both B and C

Explanation / Answer

Answer - Both A and B.

Ice cores are valuiable climatic archives because the ice contains geochemical proxies of atmospheric ozone of the past and contains geochemical proxies of temperature in the past.

A long cylinder of ice that is obtained by drilling vertically downwards through an ice sheet is called ice core. The seasonal accumulation of ice produces bands by which the age of the core can be determined and sections of it dated. Analysis of ice from particular sections reveals informations regarding past climate. Dust trapped in the ice indicates arid conditions and bubbles of air record the chemical composition of the atmosphere.

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