Earth
What mineral makes both sapphires and rubies when cut and polished?
More Questions from Earth
What is a sudden collapse and downward motion of ice and rocks down a mountainside?
Reveal Answer
What is the low pressure area along the equator called?
Reveal Answer
What is a tornado that doesn't reach the ground called?
Reveal Answer
What is the system consisting of the Earth's sun and the eight planets orbiting it called?
Reveal Answer
What imaginary line divides the Earth's northern and southern hemispheres?
Reveal Answer
What were water mills used for in the 1700's in Europe?
Reveal Answer