geologic era

Question 1

What is Precambrian?

Answer 1

Canadian Shield was created

• first living organisms
• many cycles of mountain building and erosion

Question 2

What is Paleozoic?

Answer 2

• Canadian Shield worn down by erosion
• sedimentary rock forced upwards creating the Appalachian Mountains
• living organisms including fish, shellfish, amphibians

Question 3

What is Mesozoic?

Answer 3

• eastern Arctic and Innuitian Mountains formed
• warm climate creating huge swamps and forests
• living organisms including dinosaurs and reptiles

Question 4

What is Cenozoic?

Answer 4

• final changes giving Canada its present landforms
• four ice ages
• dinosaurs died out, human beings became dominant species

Question 5

What is geologic era is Canada in?

Answer 5

Cenozoic