How has the climate changed during Earth’s 4.5 billion year history?
Explain why we have seasons.
How do global weather patterns affect us here in Bemidji?
Stratigraphic timescale. Picture: Ray Troll
How can we determine the age of a fossil?
Why does one animal or plant become fossilized but millions of others do not?
What kinds of rocks are in Minnesota? Where did they come from?
What characteristics can we use to classify minerals?
What are rocks made of?
Image copyright National Geographic
How are earthquakes, volcanoes, and mountains related?