Fossils in _______ layers of rock are generally estimated to be _______ than fossils found in the upper layers. older, younger newer, younger older, older newer, older

Respuesta :

fossils in LOWER layers of rock are generally estimated to be OLDER than fossils found in the upper layers.

Answer:

fossils in older layers of rock are generally estimated to be OLDER than fossils found in the upper layers.

Explanation: