Answer:
Fossils in older layers of rock are generally estimated to be older than fossils found in the deeper layers.
Explanation:
A fossil is the mummified remains or evidence of organisms (plants, mammals, etc) that existed in the faraway antiquity. The rule is that a fossil need predate reported social past. While there is no determined period, typically something necessity be traditional than 10,000 times to be thought a fossil.
The earliest fossils in the fossil report period from 3.5 billion years before, though, it wasn't till nearby 600 million ages past that complicated, multi-cellular living began were first stored in the fossil account.
