Fossils in _______ layers of rock are generally estimated to be _______ than fossils found in the deeper layers. (3 points) Explain your answer for justification.
older, younger
The sentence says “than fossils found in the deeper layers” The deeper fossils are older. “Than” is a contrasting word, so they’re looking for the opposite of deeper.
Newer layers of rock have younger fossils because fewer layers of dirt and rock have had a chance to compress on top of them.
