Polar Bears

The life span of polar bears is thought to mean that the average life expectancy of polar bears is 15 to 18 years, but some are marked in the early 1930's. Depending on the zoo it is known that the life of the bear can go back to the mid 1930's. It is understood that only a 1 year old bear lived to be 40 years old. Biologists believe that starvation is the leading cause of adult bear's death. This may be the reason to live longer in bear captured (zoo). Polar bear populations live in Greenland, Russia, Alaska and Canada.

Let's talk about polar bears. The health and quantity of 19 Polar bear populations in the Arctic Circle are very good, over decades *. Mitch Taylor who has studied polar bears for more than 30 years says that the population has increased and it is very resilient. Every year at least 600 Polar bears are shot, killed and killed by hunters - Does your favorite news source teach you this? The Arctic Ocean ice grows and shrinks every 6 months and is about the same size as the mainland of the United States. As the Earth warms, the overall trend of ice continues to decline every year; all animals living there have dealt with this fluctuation for millions of years. International catch and seal hunting quota are related to the number of polar bears rather than the temperature

Polar bears are so-called "indicator species". In other words, the overall health status of the species reflects the health condition of the environment. Extinction of polar bears shows that sea ice has disappeared, polar bears are "indicator species" for the Arctic environment. Let's consider the basic layout of the Arctic food chain shown above. You can see all Arctic creatures begin with vegetation (algae) growing in the snow. There is no alga without sea ice, there is no invertebrate without algae, without an invertebrates there are no fish etc in polar bears. Without ice for this plant to grow, the food chain will be released and seeds will be lost. Domino effects due to loss of sea ice are important to help us recall that everything on earth is interrelated and that all behaviors react.