Clipping Board » Environmental Pollution & Change ─ How dirty the human heart is, how dirty the environment will be...
Update Date: 2008/11/18 09:54 International Center/Compilation
Global warming not only affects human survival but also poses a threat to polar bears living in icy environments. According to scientists, due to rising Arctic temperatures, sea ice is becoming less likely to form, making it difficult for polar bears to hunt for food. There have already been instances of polar bears resorting to cannibalism and survival of the fittest. If this situation does not improve, polar bears could completely disappear by the middle of this century.
The mighty polar bear, often considered the ruler of the icy wilderness, is unable to withstand the ravages of climate warming. In Canada's Hudson Bay, despite temperatures being -14°C, the higher Arctic temperatures make it difficult for sea ice to form. This prevents polar bears, who rely on sea ice as a base for hunting seals, from going out to find food. For example, a group of polar bears has not eaten for 4 to 5 months, losing nearly 1 kilogram of weight each day. Scientists report that there have even been tragic cases of polar bears eating each other.
Ecologist Amstark pointed out, "This is not about polar bears fighting over mates or territory, which is a common cause of death among them. Other bears might think, 'If there's a dead bear, I'll eat it,' but in reality, it's about hunting and preying on each other."
To study the polar bear population, scientists used infrared cameras to locate pregnant female polar bears and measured their weight. They found that the weight of female polar bears has decreased by 20% over the past 25 years, significantly affecting their reproductive capabilities. Scientists are concerned that polar bears could completely disappear in less than 50 years.
Amstark stated, "Predictions indicate that by the middle of this century, polar bears may disappear from the waters of Alaska." However, there are differing opinions on whether the polar bear population is rapidly declining. Canadian conservation officer Stirling believes, "Two polar bear populations were over-hunted in the past, but now their numbers are increasing. Their rate of decline is low, so naturally, their numbers are increasing."
Regardless of whether the polar bear population is increasing or decreasing, protecting the environment and maintaining ecological balance remains a crucial issue that humanity cannot overlook. (Source: ETToday News Reporter Chen Changhui)
Source: http:/ / tw. news. yahoo. com/ art……url/ d/ a/ 081118/ 17/ 19mwq. html
Global Warming Leads to Polar Bears Hunting and Eating Each Other
Global warming not only affects human survival but also poses a threat to polar bears living in icy environments. According to scientists, due to rising Arctic temperatures, sea ice is becoming less likely to form, making it difficult for polar bears to hunt for food. There have already been instances of polar bears resorting to cannibalism and survival of the fittest. If this situation does not improve, polar bears could completely disappear by the middle of this century.
The mighty polar bear, often considered the ruler of the icy wilderness, is unable to withstand the ravages of climate warming. In Canada's Hudson Bay, despite temperatures being -14°C, the higher Arctic temperatures make it difficult for sea ice to form. This prevents polar bears, who rely on sea ice as a base for hunting seals, from going out to find food. For example, a group of polar bears has not eaten for 4 to 5 months, losing nearly 1 kilogram of weight each day. Scientists report that there have even been tragic cases of polar bears eating each other.
Ecologist Amstark pointed out, "This is not about polar bears fighting over mates or territory, which is a common cause of death among them. Other bears might think, 'If there's a dead bear, I'll eat it,' but in reality, it's about hunting and preying on each other."
To study the polar bear population, scientists used infrared cameras to locate pregnant female polar bears and measured their weight. They found that the weight of female polar bears has decreased by 20% over the past 25 years, significantly affecting their reproductive capabilities. Scientists are concerned that polar bears could completely disappear in less than 50 years.
Amstark stated, "Predictions indicate that by the middle of this century, polar bears may disappear from the waters of Alaska." However, there are differing opinions on whether the polar bear population is rapidly declining. Canadian conservation officer Stirling believes, "Two polar bear populations were over-hunted in the past, but now their numbers are increasing. Their rate of decline is low, so naturally, their numbers are increasing."
Regardless of whether the polar bear population is increasing or decreasing, protecting the environment and maintaining ecological balance remains a crucial issue that humanity cannot overlook. (Source: ETToday News Reporter Chen Changhui)
Source: http:/ / tw. news. yahoo. com/ art……url/ d/ a/ 081118/ 17/ 19mwq. html