The fossil record is like a big history book of all the animals and plants that lived a long time ago. Scientists can look at the different fossils and see how they changed over time. It's kinda like looking at old pictures of your family and seeing how your grandma looked different from your mom and how you look different from them. This helps scientists see how species have evolved and changed over millions of years. So the fossil record is like a big puzzle that helps us understand how life on Earth has evolved.
