Answer:
Animal skins provided thermal protection and prevented water from penetrating and wetting the interior of the home.
Explanation:
The paleo Indians lived in the paleolithic period, which was a period where the climate was very cold and difficult to survive.
Within this environment, the paleo Indians were a nomadic people, building simple residences, but very well adapted to the climate in which they were subjected. Their houses, generally, were of round shape, being structured by sticks that were covered by bushes and animal skins.
The skins allowed thermal protection, gave the houses a check and prevent rain water, or moisture from entering the interior of the house.