Knowledge+Saturation

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 * Wikipedia:**
 * Ice** is a solid phase, usually crystalline, of a non-metallic substance that is liquid or gas at room-temperature, such as carbon dioxide ice (dry ice), ammonia ice, or methane ice.

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An **ice cap** is an ice mass that covers less than 50 000 km² of land area (usually covering a highland area). Masses of ice covering more than 50 000 km² are termed an ice sheet.

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The melting of the north polar cap would not appreciably increase the volume of water in the oceans, since the north polar cap is resting on the water and not on the land. It would decrease the salinity of the oceans, however, and this would cause some serious problems. The melting of the south polar cap, which rests on the continent of antarctica, would add a great deal of water to the oceans and help to raise sea level, as well as contributing to lower salinity. The melting of the glaciers of Greenland would also significantly raise sea level.

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Instrumental temperature record of the last 150 years Details of the modern climate record are known through the taking of measurements from such weather instruments as thermometers, barometers, and anemometers during the past few centuries. The instruments used to study weather conditions over the modern time scale, their known error, their immediate environment, and their exposure have changed over the years, which must be considered when studying the climate of centuries past.

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 * I learned that because of the ice caps melting, little by little, the global temperatures are going up. (as shown in the picture.) Although, it may be natural that the temperatures are rising, or WE are causing IT to rise**