Space
This planet is closest to the sun.
Mercury.
The human heart has this many chambers.
4.
The largest planet in our solar system.
Jupiter.
Adult humans typically have this many bones.
206.
This planet is known as the red planet.
Mars.
Adult humans typically have this many teeth.
32.
This planet is the farthest in our solar system from Earth.
Neptune.
Teeth.
This planet is known as the hottest planet.
Venus.
The powerhouse of the cell.
Mitochondria.