1.
The fundamental scientific theory that all living things are composed of cells.
2.
The process by which organisms maintain a stable internal environment despite external changes.
3.
The process by which plants use sunlight, water, and carbon dioxide to create glucose and oxygen.
4.
The speed of an object in a specific direction.
5.
The rate at which velocity changes over time.
6.
A force that opposes motion between two surfaces that are touching.
7.
The rigid outer part of the earth, consisting of the crust and upper mantle.
8.
The soft, plastic-like layer of the mantle upon which tectonic plates move.
9.
The process where one tectonic plate sinks beneath another into the mantle.
10.
The curved path of a celestial object around a star, planet, or moon.
11.
One complete orbit of a planet around the sun (defines a "year").
12.
The spinning of a planet on its axis (defines a "day").
