1. Fossils Tell of Long Ago
By Aliki

2. Vocabulary
• amber: a yellowish sap from plants that hardens and
becomes a fossil
• fossil: a plant, animal, or imprint that has turned to
stone
• extinct: not alive today; all members of the group or
species have died out
• mammoth: a kind of elephant that lived millions of
years ago

17. How are fossils
formed?

18. Where can
fossils be
found?

19. What can be
learned from
studying fossils?