Arctic deer live on islands in Canada's arctic regions. They search for food by moving over ice from island to island during the course of the year. Their habitat is limited to areas warm enough to sustain the plants on which they feed and cold enough, at

The author of the argument asserts that arctic deer populations have declined due to global warming which makes these animals unable to follow their age-old migration patterns from island to island. This conclusion is buttressed by evidence which should be carefully scrutinized in order to evaluate the argument.

First of all, we were told that the decrease in number of deer coincides with global warming and thus should be caused it. However, correlation does not always mean causation. In fact, some factors which were not taken into consideration by the writer may affect the arctic deer populations. Perhaps we have a deal with a natural pattern, we know for sure that the planet periodically undergoes drastic changes in climate and cold weather may be substituted by warm one. Animals which inhabit the planet should adapt to new environment and if they are not able to do so, they will died out as thousands of species before it. In other words, the natural pattern which leads to increasing sea levels may cause the problem.

Furthermore, the mankind has demonstrated its ability to ruin environment. As we were told the animals consume plants which grow in the arctic regions. Perhaps the humankind activity may cause the shortage of the plants which the wonderful creatures usually consume. For instance, our activity such as unearthing fossil minerals may lead to soul contamination and thus the plants may disappear. Moreover, the plants may be sensitive to air pollution. In both these cases, our action cause the deterioration or destruction of food source of the deer.

Finally, the argument claims that arctic deer are not able to follow the age-old migration patterns across the frozen sea. Perhaps, the animals is not able to do it due to our activity, we may build roads and highway to towns which are located in the region. Or some mills and plants may be built in the arctic region in order to unearth oil or other minerals. Moreover, the deterioration of international relationship may stimulate governments to build military facilities in the region to monitor Russians activity. In all these examples, we impede deer from following its natural migration patterns by creating barriers such as roads or noise and fuss which may feel the animals anxious.

In conclusion, the argument avers that due to global warming the arctic deer are not able to follow their traditional migration ways as a result deer's populations have fallen. However, the author does not manage to recognize some other factors which may lead to the decline as well as to the climate change. Thus, the argument seems to be unwarranted and the real causes of the decline should be studied additionally.