Question

QUESTION 1

Answer 1

1. Triassic
2. eon > era > period
3. The scientists study fossils and rock layers to find major changes.

Answer 2

1. Terrassic:  Relating to or denoting the earliest period of the Mesozoic era, between the Permian and Jurassic periods.
2. Eon > Era > Period:  An Eon is a large amount of time, An Era is a long and distinct period of history, A length of time.
3. Scientists define the segments of the geological time scale by studying fossil and rock layers for major changes.