What Happened to the Neanderthals

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

Q40: What do fossils tell us? Why is

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

Q46: Regarding natural selection, what is meant when

Q48: What are the steps necessary to create

Q49: What "crucial development" in the history of