This one is quite simple. For food, you would need to find some sticks and a sharp rock to simply help you sharpen the stick to use as a spear. you could fish or hunt for small animals. simply trees, animals, and running water are necessary for your survival. strategies such as building a shelter, finding an abandoned cave, or using the trees if there are any as sleeping areas would work. Native Americans used straw for huts. They also used skins from animals as clothes and material for their huts that they build as shelter. these amongst many others are used. Hope this helps!