My ancestors used to live in Asia. Once the land bridge appeared the big prey went across it and because my ancestors ate those animals they followed them for food. Then the land bridge closed up they couldn't get back.
My family lived in the arctic ice fields. Here are three natural resources: Snow for water, animals for food,and branches for suport.
Our family has made harpoons. When you kill a seal, fill it with air,and then attach it to a rope with a spear. If it gets inbeded in a whale it will slow it down when it trys to swim away. Also our family takes animal bones and driftwood to make structers for their home.