How have humans adapted to the diverse environments of North america and to climate change over time?

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Introduction
Climate change has been around for a long time, and people remarkably devised ways by which they had to adapt. The environment conditions at times were very hostile with high temperatures and other times had spells of below average degrees Celsius. But the ideal thing was that people were able to carry out their day-to-day activities conveniently. This paper will focus on how various groups of individuals in two chosen regions in North America were able to adapt and to these changes in the immediate climate. Furthermore, it will explain how the people were able to survive in unbearable environmental conditions. North America on the other hand, is understood to the third-largest continent in the world extending from the minute Aleutian Islands located in the Northwest to the great south where we have the Isthmus of Panama.
Diverse environment adaptation in Canada
The environment was once found to be completely hot and humid in the great Triassic period. In these instances, the early man found it hard to survive since the environment was not conducive enough to even stand the appropriate plants they were using as food. Therefore, for them to counter this effect they began establishing the upright walking posture and others in the same realm took the art of tool-making. This particular activity to adapt to a drier habitat was primarily known as the savanna hypothesis.
Another factor that led to the adaptation of very unstable environments was the variability selection module.

Adding onto this; variability selection was merely the benefits that an individual gets after various forms of behaviors have changed. The variations in practices were very influential in the test of survival for the fittest in the unbearable environs.
Most of the people in Canada approximately 12,000 years ago were involved in hunting and fishing as a form of livelihood. But sometimes due to hostile weather conditions, they were known to migrate foraging for food. These migrations apparently took place as people moved their camps in various areas where there was the conducive environment.
In Canada per se, the only family that was primarily carrying out farming as a solitary activity was the Iroquois and Hurons. Moreover, these people and other related tribes only had the belief that farming was the ultimate way of meeting everyday needs. The First Peoples of Canada are well known to have in possession various artwork such as pottery, silver and also copper tools to aid them in making a livelihood.
Diverse environmental adaptation in the Arctic Area
In the Paleo-Indian Period of approximately before 10,000 years ago, Alaska was a very unstable region full of ice. During this time in history, there is little information known about it in the Arctic environment. People living during this period were mostly found at the coastal strips and at marine points where they put up base camps. Regarding food, these people consumed food that was a high seafood diet rather than the deer and the bears which were plenty.
Later on came the Archaic Period about 10, 000 years people started the idea of being hunters and gatherers that proved to be efficient for the sustenance of their lifestyle. Furthermore, during this particular period the culture of implementing small blades which were about 2.5 inches long began. The blades that were crafted by the help of small wedge-shaped cores were understood to carry out hunting escapades.
Additionally, as we dwell in the Western Arctic Circle, approximately 7000 years ago, the Inuits who inhabited the area were known to undertake sea mammal hunting as a way of life. Furthermore, some cultures that developed in the Western Arctic which was the Norton which later on evolved into the Thule culture and the Dorset (later on was the Inuit).
The Eastern Arctic on the other hand about 4000 years ago consisted of people who were also hunters that were targeting musk oxen and other animals. Due to high cold conditions in this region, people left the area and was later on in reoccupation in areas of around 2,500 years ago by the Dorset people. These people survived by hunting seals with harpoons and were known to flee the area 1,000 years back. It is in postulations that the Dorset people’s migration was as a result of warming of climate that led to seal populations decreasing. The groups that came and replaced the Dorset were the Thule people from the Western Arctic who were precisely adapted to the Arctic environment. They were superior concerning technology such as the dogsleds, boats and also bows and arrows which helped them to hunt a broader range of animals.
After 1000 years ago, the Contact Period came into play, and it involved the Inuit from the Eastern Arctic coming into contact with the Europeans. A lot of revolts marked this period due to the invasion of the Europeans, the Russians (1732) and also the American whalers (the 1840s). These people who came into the Arctic region destabilized the inhabitants changing their way of living and by also depleting their source of food.