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