This bacteria gave us oxygen.
What is stromatolites.
This vocab term has a tendency to break into irregular pieces.
What is fracture
This rock forms deep under ground.
What is metamorphic rock
This is when was the earth formed.
What is 4.5 billion years ago?
This is the most common mineral.
What is feldspar
This is the most common fossil in a rock.
What is limestone
These are the 3 types of the rock cycle.
What is igneous, sedimentary, metaphoric.
This super contented caused "snowball earth".
What is rodinia
This process forms igneous rocks.
what is molten rock cools and hardens
This year earth had a downpour.
What is 4,000,000,000 ya
These dinosaurs appeared in?
What is 225,000,000