What was early life like?
The place we call home was not always like this the oceans we not always blue and the air was not always breathable. Early life was very volcanic and the air was very toxic. The things we have today would not have survived back then mainly because of earths conditions. Earth didn't have a protective layer so UV rays were very harmful.
HISTORY IN ROCKS
Fossils: remains or traces of living things from a long time ago
When a plant or animal dies they get buried in mud or silt then layers of sediment covers the remains of the plant or animal then it hardens which creates a fossil.