All of these played important roles!
The mining industry enabled the excavation of many important and precious minerals which wre later used in differetn technological applciations.
The railroads increased the speed by which things were being transmitted.
The cattle business enabled people to sustain themselves through food.
The homestead act enabled people to become self-sufficient.
Answer:
their body is mostly fat which helps them keep warm/survive without food, large paws spread out their weight across the ice to help from falling in, fur is white to camouflage them from predators, their coat sheds water to prevent heat loss, small surface area to volume ratio to minimize heat loss
Explanation:
