Fossils are remains or traces of ancient life.

They form when organisms are buried and preserved.

Types include bones, footprints, and plant imprints.

Fossils help scientists understand evolution and extinction.

Paleontologists study fossils to reconstruct past environments.

Fossils are found mostly in sedimentary rocks.

They provide clues about climate and geography long ago.

Not all organisms become fossils—conditions must be right.

Fossils help date rocks and geological time periods.

They connect us to Earth’s history and life’s development.