Pacific Ocean
Arctic Ocean
Atlantic Ocean
Indian Ocean
Mars
Jupiter
Saturn
Venus
Albert Einstein
Galileo Galilei
Isaac Newton
Niels Bohr
Argon
Helium
Hydrogen
Oxygen
American Revolution
French Revolution
World War I
World War II
Blue Whale
African Elephant
Giraffe
Humpback Whale
Potassium
Calcium
Magnesium
Sodium