Rock layers and fossils

1. A fossil found in a lower layer of rock is likely from an animal that lived Mei than one in an upper layer.

   • earlier (right)
   • bigger
   • faster

2. Hana found a fossil in a deep layer of rock and saw another one in a shallow layer. Which animal lived first?

   • the one with no bones
   • the one in the deep layer (right)
   • the one in the shallow layer

3. Lena wonders: A fossil of a sea creature is found in a layer below one with a tree. What does this mean?

   • Trees lived before the sea
   • Sea creatures don't grow
   • The sea creature lived before trees grew (right)

Tip: Fossils in lower layers are from earlier times because the rock formed first.