How are Fossils used to understand the history of life on Earth?

Fossils provide a window into the past, offering clues about the history of life on Earth. By studying fossils, scientists can piece together the evolutionary timeline, understand how species have changed over time, and uncover the environmental conditions of different time periods. This helps us comprehend the diversity of life and the way different species have adapted to environmental changes through geological time. Fossils also aid in determining the age of rock layers through relative and absolute dating methods, allowing for a deeper understanding of the Earth's history. Overall, fossils serve as invaluable tools for unraveling the mysteries of evolution and the development of life on our planet.