Biofact in archaeology is a fancy word that means things that were once alive and were used by people in the past. It's like finding a puzzle piece from a long time ago that helps us understand how people lived back then.
So imagine that you are playing with your toys and you decide to collect all the things that were once alive. Maybe you find a leaf from a tree or a stick from the ground. That's kind of what archaeologists do, except they look for things that were once alive that people used a long time ago.
For example, they might find animal bones from when people hunted for food, or they might find plant remains from when people grew crops. These biofacts can tell archaeologists a lot about how people lived, what they ate, and even what kind of climate they lived in.
So, biofacts are like little clues that help archaeologists piece together the story of the past. And just like how you can use your toys to imagine different stories and adventures, archaeologists can use biofacts to imagine how people lived a long time ago.