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Published byOsborn Oliver Modified over 9 years ago
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Typically, our poles serve to cool the Earth. If the poles begin to warm, our “cooling system” breaks down. Example: Polar ice reflects sunlight. If this ice melts, the sunlight isn’t reflected and Earth will warm even more. This is called a positive feedback.
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Arctic sea ice is melting The year tends to be warmer More insects More trees with insect infestations Disruption to animal cycles and patterns (polar bear) Thawing permafrost= building collapse More trees grow, which absorb CO2, this could cause less warming. This is an example of a negative feedback.
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Ice around Antarctica has actually been increasing slightly Possibly due to the isolation of Antarctica due its wind/ocean currents Cold air flowing off of the land keeps this region colder as well What will happen in the future??
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If ice begins to melt, sea level will rise anywhere from 6 inches to nearly 2 feet. Coastal cities may flood Increased storm surge damage Freshwater drinking sources affected
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