The curved path of a celestial object or spacecraft around a star, planet, or moon, esp. a periodic elliptical revolution.
Orbit
A state of matter that has a definite volume but no definite shape.
Liquid
What is known as the Red Planet?
Mars
What body system delivers oxygen and nutrients to cells and takes away wastes?
Circulatory system
What is the largest organ of the body?
skin
What is the biggest muscle in the body?
gluteus maximus
