The climate is changing very quickly and comparison in todays time back then it was changing very slowly thats what i know about that
hope it helps you out good luck
I guess it is aluminium in cationic form
Answer:
Angiosperms evolved during the late Cretaceous Period, about 125-100 million years ago.
hope it helps.
Can you please display a picture of the "rock below in Whistler, Canada"? It'll make the question easier to answer.