Unit 5 Lesson 3

What is the longest period in Earth's history?

• Precambrian Era

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

During which era did the continents exist as Pangaea?

• Precambrian Era

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Which era is known for the Cambrian Explosion?

• Paleozoic Era

• Precambrian Era

• Cenozoic Era

• Mesozoic Era

In which era did dinosaurs roam the Earth?

• Mesozoic Era

• Precambrian Era

• Cenozoic Era

• Paleozoic Era

Which era do we currently live in?

• Precambrian Era

• Mesozoic Era

• Paleozoic Era

• Cenozoic Era