for better research go to under NOAA - Climate.gov
This is a short paraphrased summary of the article about ice cores in that website.
Answer: Researchers in labs may melt or crush bits of the ice core a little at a time, each deeper layer shows the time in the Earth's climate history. Tiny pieces of pollution, metals, radoiactive fallout, pebbles, sea salt, volcanic ash and even air bubbles all present important information that researchers can look for to track changes in the atmosphere's composition and temperature.
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Answer/Explanation:
As distinguished from a temple, a shrine usually houses a particular relic or cult image, which is the object of worship or veneration. A shrine may also be constructed to set apart a site which is thought to be particularly holy, as opposed to being placed for the convenience of worshipers. Some major shrines have a national rather than a local role, and are visited by millions of people from across Japan at major festivals. A Shinto Shrine is the main physical place of worship for followers of the Japanese Shinto religion. The name of a shrine is typically followed by the suffix jinja. Its main role is to be the home to one or sometimes more kami spirits, worshipped in the Shinto religion.
The Hoover dam, and it is used for flood and silt control, hydroelectric power, agricultural irrigation, and domestic water supply.
