Which is the third planet from the Sun?

What is the shape of the Earth?

Which is the largest ocean on Earth?

Which gas do humans need to breathe?

Which is the highest mountain in the world?

What is the “Blue Planet” called?

Which is the largest continent on Earth?

Which line divides the Earth into Northern and Southern Hemispheres?

Which is the coldest place on Earth?

What covers most of Earth’s surface?