Transcript Lesson 7 WHY DID THE DINOSAURS DISAPPEAR?

Lesson 7
WHY DID
THE DINOSAURS
DISAPPEAR?
Ｐａｒｔ3 ＲＥＶＩＥＷ
1. According to Muller how often does the
companion star come near the sun?
⇒Every (
)(
) years.
2. What does the gravity of the companion star pull
from deep space?
⇒It pulls (
)(
)(
).
26
million
millions
of
comets