Polar Bears and Climate

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Climate change refers to the variations in the mean and variables of climate properties that persists over long periods and results in one among the most crucial and common problems in the current world. Often, climate change results from human activities or natural gases and has both physical and economic effects on the world and people. Climate change has social effects on aspects such as health, food production, and growth. Climate change causes tremendous spread of certain infectious diseases and increased death rates related to heat waves. Climate change would affect the health conditions of polar bears through malnutrition, high death rates, and frequent occurrence of diseases and injuries due to extreme changes in weather. In addition, high concentration of ozone gases at ground level causes cardio-respiratory diseases in urban areas (Richard, 2009).
In summary, climate change has physical and social effects on both human being and animals. The physical effects include increased temperatures, famines, high precipitation, and high sea levels. On the other hand, social effects include low food production due to high temperatures, spread of diseases and many others. The effects are unlikely to reduce unless a quick action is taken to curb the adverse climatic changes.
In the wild, polar bears typically live to be 20-30 years of age. Both females and males mature at the age between four and five years. Females regularly conceive their first litter of offspring when they are at maturity stage, while males do not generally begin mating until they are between eight and ten years of age. Mating happens in April to May, but delaying implantation, the fertilized egg cease developing at the early stage, implies that fetal formation ...

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...Keeps Hungry Polar Bears on Land. Retrieved on 20 April 2014 from http://www.livescience.com/28038-sea-ice-affects-polar-bear-migration.html
Peacock et al. (2013). Population ecology of polar bears in Davis Strait, Canada and Greenland. The Journal of Wildlife Management, 77: 463-476
Richard, T. (2009). The Economic Effects of Climate Change. Journal of Economic Perspectives, Vol. 26(2), 29-56.
Sjegren, K. (2013). Climate change fills polar bears with toxins. Retrieved on 20 April 2014 from http://sciencenordic.com/climate-change-fills-polar-bears-toxins
Skeptical Science, (2011). How will global warming affect polar bears? Retrieved on 20 April 2014 from http://skepticalscience.net/pdf/rebuttal/polar-bears-global-warming-basic.pdf
Stirling and Derocher. 2012. Effects of climate warming on polar bears: a review of the evidence. Global Change Biology, 18: 2694–2706

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