scientific terminology

2. A push or pull that can change the motion of an object.
3. A community of living organisms and their environment.
4. A substance made up of only one type of atom.
7. Reaction The process where substances change into new ones with different properties.
9. The force that attracts two objects with mass toward each other.
10. The ability to do work or cause change in a system.
11. The process by which green plants convert sunlight into energy.
13. The smallest unit of matter, composed of protons, neutrons, and electrons.
14. System A group of celestial objects, including the sun, planets, and their moons.

1. A group of atoms bonded together chemically.
2. The remains or traces of prehistoric life preserved in rocks.
5. A form of energy resulting from the movement of charged particles.
6. The study of heredity and the passing of traits from one generation to the next.
8. A force that attracts or repels objects made of certain materials.
12. The gradual change of species over time through natural selection.