What Do Fossils Tell Us? Why Is What They Tell

Q35: Name at least four vestigial organs.

Q36: Planetary research in recent years has shown

Q37: Which of the following gases were in

Q38: Evidence for a mass extinction can be

Q39: What is the significance of ALH84001?<br>A) a

Q41: What is thought to have been going

Q42: Why is life on Earth thought to

Q43: The greatest gap in scientists' knowledge about

Q44: The Cambrian explosion indicates<br>A) the asteroid strike

Q45: What is a vestigial organ? And why