Fore there environment t they had Vast grass lands and sweeping valleys and fresh water steams. There isn't a lot of shelter form the scorching sun in the hot summers and there are some trees.
The Great Plains and some others there food source was hunting rabbits and Bison to eat and skin. but they didn't have the right kind of buffallow to eat but they get what they can. The Great Plains Americans mostly eat buffallow.
They lived in tepees so when they had to move they could take it down easy. It's easy for the Great plains people to do that because the tepees are made out of animal skin. For another thing for there daily life is that they don't stay in one place they move with the bison and buffallow.