How does the use of fire demonstrate prehistoric people's ability to adapt to their environment?

Fire is part of your everyday life. Early Humans, used fire in different ways, but one of the ways was to adapt to their environment. They used fire to scare away the predators in the late nights. They also used fire in the cold days so they can keep themselves warm and cozy. Early humans haven't only used fire to adapt to their environment; they used it for other things too. The early humans played with fire, until they found out what it is, and how harmful it can be. Early humans have used fire for cooking their food, they cooked there food so; they wouldn't get poisoned if the meat/etc. wasn't good, to make the food easier to digest, and to just make it tastier.