What is the main topic of the excerpt 'Earth’s Shakes and Quakes'?

• Earthquakes and their effects

• Volcanoes and eruptions

• Tornadoes and hurricanes

• Floods and tsunamis

Which natural phenomenon is primarily discussed in the excerpt?

• Earthquakes

• Volcanoes

• Tornadoes

• Floods

What does the theory of plate tectonics state?

Which sentence uses the commas correctly?

• Rachael, Miguel, and I are in the same class.

• Rachael Miguel, and I are in the same class.

• Rachael, Miguel and I are in the same class.

Which is correct?

• We have swim lessons on Mondays, Wednesdays, and Thursdays.

• We have swim lessons on Mondays, Wednesdays and Thursdays.

• We have swim lessons on Mondays Wednesdays, and Thursdays.