Biologists have been keeping records of the bear populations, temperatures, and amount of ice over time and have collected a large enough body of evidence to prove that the conditions are only worsening for these animals. The graphs below show this.
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| The amount of ice that is freezing on the polar ice caps during the month of September is steadily decreasing, and has been since 1979. The average is growing lower all the time. One day, we might not have any left at all. |
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| This pie chart shows that the amount of declining population in bears has greatly increased from 2005 to 2009. That is only four years of global warming's effects. It also shows that less of the population is stable, and less of the population is increasing, yet the amount of insufficient data stays the same. |
These graphs do a good job of showing what the ice has been doing over time. Many people don't realize how much of the arctic environment we have already lost. It also shows how quickly the bear population is decreasing. Each year the struggle becomes greater for the polar bears.
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