Smallest planet is closest to sun; does not have a true atmosphere; has extreme hot and cold temperatures

An environment that provides the things a specific organism needs to live, grow, and reproduce.

A phase of the moon that comes after a full moon and before a last quarter moon where all of the moon is lit up except for a small bit on the right side of the moon that we can see.

The amount of space something takes up

Plant food; type of sugar

A measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object.

The collection of planets and their moons in orbit around a sun, together with smaller bodies such as asteroids, meteoroids, and comets.

A relationship between two species in which both species benefit

A living thing

Severe tides that occur during Full and New Moons

An animal that eats both plants and animals

An astronomical event that occurs when one celestial object moves into the shadow of another.

A measure of the amount of matter in an object